Submission #518478

#	Time	Username	Problem	Language	Result	Execution time	Memory
518478		tabr	Parrots (IOI11_parrots)	C++17	Compilation error	0 ms	0 KiB

encoder

#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif

#define encoder

const int N = 600;

void add(bitset<N>& a, const bitset<N>& b) {
    int c = 0;
    for (int i = 0; i < N; i++) {
        int nc = (a[i] & b[i]) | (b[i] & c) | (c & a[i]);
        a[i] ^= b[i] ^ c;
        c = nc;
    }
}

bitset<N> f(const vector<int>& b) {
    vector<bitset<N>> dp(256);
    for (int i = 0; i < b[0]; i++) {
        dp[i] = bitset<N>(1);
    }
    for (int i = 0; i < n; i++) {
        vector<bitset<N>> new_dp(256);
        for (int j = 0; j < 256; j++) {
            for (int k = j; k < 256; k++) {
                add(new_dp[k], dp[j]);
            }
        }
        for (int j = b[i]; j < 256; j++) {
            add(new_dp[j], bitset<N>(1));
        }
        swap(dp, new_dp);
    }
}

#ifdef encoder
#include "encoder.h"
#include "encoderlib.h"

void encode(int n, int a[]) {
    bitset<N> x;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < 8; j++) {
            if (a[i] & (1 << j)) {
                x[i * 8 + j].flip();
            }
        }
    }
    vector<int> b(n * 5);
    for (int i = 0; i < n * 5; i++) {
        int low = 0;
        int high = 256;
        while (high - low > 1) {
            int mid = (high + low) >> 1;
            b[i] = mid;
            if (x < f(b)) {
                high = mid;
            } else {
                low = mid;
            }
        }
        b[i] = low;
    }
    for (int i = 0; i < n * 5; i++) {
        send(b[i]);
    }
    assert(f(b) == x);
}
#endif

#ifdef decoder
#include "decoder.h"
#include "decoderlib.h"

void decode(int n, int l, int a[]) {
    vector<int> b;
    for (int i = 0; i < l; i++) {
        b.emplace_back(a[i]);
    }
    sort(b.begin(), b.end());
    bitset<N> x = f(b);
    for (int i = 0; i < n; i++) {
        int res = 0;
        for (int j = 0; j < 8; j++) {
            if (x[i * 8 + j]) {
                res |= 1 << j;
            }
        }
        output(res);
    }
}
#endif

#ifdef tabr
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    return 0;
}
#endif

decoder

#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif

#define decoder

const int N = 600;

void add(bitset<N>& a, const bitset<N>& b) {
    int c = 0;
    for (int i = 0; i < N; i++) {
        int nc = (a[i] & b[i]) | (b[i] & c) | (c & a[i]);
        a[i] ^= b[i] ^ c;
        c = nc;
    }
}

bitset<N> f(const vector<int>& b) {
    vector<bitset<N>> dp(256);
    for (int i = 0; i < b[0]; i++) {
        dp[i] = bitset<N>(1);
    }
    for (int i = 0; i < n; i++) {
        vector<bitset<N>> new_dp(256);
        for (int j = 0; j < 256; j++) {
            for (int k = j; k < 256; k++) {
                add(new_dp[k], dp[j]);
            }
        }
        for (int j = b[i]; j < 256; j++) {
            add(new_dp[j], bitset<N>(1));
        }
        swap(dp, new_dp);
    }
}

#ifdef encoder
#include "encoder.h"
#include "encoderlib.h"

void encode(int n, int a[]) {
    bitset<N> x;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < 8; j++) {
            if (a[i] & (1 << j)) {
                x[i * 8 + j].flip();
            }
        }
    }
    vector<int> b(n * 5);
    for (int i = 0; i < n * 5; i++) {
        int low = 0;
        int high = 256;
        while (high - low > 1) {
            int mid = (high + low) >> 1;
            b[i] = mid;
            if (x < f(b)) {
                high = mid;
            } else {
                low = mid;
            }
        }
        b[i] = low;
    }
    for (int i = 0; i < n * 5; i++) {
        send(b[i]);
    }
    assert(f(b) == x);
}
#endif

#ifdef decoder
#include "decoder.h"
#include "decoderlib.h"

void decode(int n, int l, int a[]) {
    vector<int> b;
    for (int i = 0; i < l; i++) {
        b.emplace_back(a[i]);
    }
    sort(b.begin(), b.end());
    bitset<N> x = f(b);
    for (int i = 0; i < n; i++) {
        int res = 0;
        for (int j = 0; j < 8; j++) {
            if (x[i * 8 + j]) {
                res |= 1 << j;
            }
        }
        output(res);
    }
}
#endif

#ifdef tabr
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    return 0;
}
#endif

Compilation message (stderr)

encoder.cpp: In function 'void add(std::bitset<600>&, const std::bitset<600>&)':
encoder.cpp:17:14: error: no match for 'operator^=' (operand types are 'std::bitset<600>::reference' and 'int')
   17 |         a[i] ^= b[i] ^ c;
      |         ~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:45,
                 from encoder.cpp:1:
/usr/include/c++/10/cstddef:168:3: note: candidate: 'constexpr std::byte& std::operator^=(std::byte&, std::byte)'
  168 |   operator^=(byte& __l, byte __r) noexcept
      |   ^~~~~~~~
/usr/include/c++/10/cstddef:168:20: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::byte&'
  168 |   operator^=(byte& __l, byte __r) noexcept
      |              ~~~~~~^~~
In file included from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/ios_base.h:107:3: note: candidate: 'const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)'
  107 |   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
      |   ^~~~~~~~
/usr/include/c++/10/bits/ios_base.h:107:29: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::_Ios_Fmtflags&'
  107 |   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
      |              ~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/ios_base.h:149:3: note: candidate: 'const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)'
  149 |   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
      |   ^~~~~~~~
/usr/include/c++/10/bits/ios_base.h:149:29: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::_Ios_Openmode&'
  149 |   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
      |              ~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/ios_base.h:189:3: note: candidate: 'const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)'
  189 |   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
      |   ^~~~~~~~
/usr/include/c++/10/bits/ios_base.h:189:28: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::_Ios_Iostate&'
  189 |   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
      |              ~~~~~~~~~~~~~~^~~
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:105,
                 from encoder.cpp:1:
/usr/include/c++/10/future:170:18: note: candidate: 'std::launch& std::operator^=(std::launch&, std::launch)'
  170 |   inline launch& operator^=(launch& __x, launch __y)
      |                  ^~~~~~~~
/usr/include/c++/10/future:170:37: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::launch&'
  170 |   inline launch& operator^=(launch& __x, launch __y)
      |                             ~~~~~~~~^~~
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:127,
                 from encoder.cpp:1:
/usr/include/c++/10/charconv:688:3: note: candidate: 'constexpr std::chars_format& std::operator^=(std::chars_format&, std::chars_format)'
  688 |   operator^=(chars_format& __lhs, chars_format __rhs) noexcept
      |   ^~~~~~~~
/usr/include/c++/10/charconv:688:28: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::chars_format&'
  688 |   operator^=(chars_format& __lhs, chars_format __rhs) noexcept
      |              ~~~~~~~~~~~~~~^~~~~
encoder.cpp: In function 'std::bitset<600> f(const std::vector<int>&)':
encoder.cpp:27:25: error: 'n' was not declared in this scope
   27 |     for (int i = 0; i < n; i++) {
      |                         ^
encoder.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type]
   39 | }
      | ^
encoder.cpp: In function 'void encode(int, int*)':
encoder.cpp:61:19: error: no match for 'operator<' (operand types are 'std::bitset<600>' and 'std::bitset<600>')
   61 |             if (x < f(b)) {
      |                 ~ ^ ~~~~
      |                 |    |
      |                 |    bitset<[...]>
      |                 bitset<[...]>
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/regex.h:1075:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
 1075 |     operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1075:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/regex.h:1156:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)'
 1156 |     operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1156:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/regex.h:1249:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1249 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1249:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/regex.h:1323:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
 1323 |     operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1323:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/regex.h:1417:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1417 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1417:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/regex.h:1492:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
 1492 |     operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1492:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/regex.h:1592:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1592 |     operator<(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1592:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:489:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
  489 |     operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:489:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::pair<_T1, _T2>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:366:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
  366 |     operator<(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:366:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::reverse_iterator<_Iterator>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:404:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
  404 |     operator<(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:404:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::reverse_iterator<_Iterator>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1451:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
 1451 |     operator<(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1451:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::move_iterator<_IteratorL>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1507:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
 1507 |     operator<(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1507:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'const std::move_iterator<_IteratorL>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from encoder.cpp:1:
/usr/include/c++/10/string_view:544:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(std::basic_string_view<_CharT, _Traits>, std::basic_string_view<_CharT, _Traits>)'
  544 |     operator< (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:544:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from encoder.cpp:1:
/usr/include/c++/10/string_view:550:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(std::basic_string_view<_CharT, _Traits>, std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >)'
  550 |     operator< (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:550:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from encoder.cpp:1:
/usr/include/c++/10/string_view:557:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator<(std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >, std::basic_string_view<_CharT, _Traits>)'
  557 |     operator< (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:557:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   61 |             if (x < f(b)) {
      |                        ^
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from encoder.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6267:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 6267 |     operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6267:5: note:   template argument deduction/substitution failed:
encoder.cpp:61:24: note:   'std::bitset<600>' is no

decoder.cpp: In function 'void add(std::bitset<600>&, const std::bitset<600>&)':
decoder.cpp:17:14: error: no match for 'operator^=' (operand types are 'std::bitset<600>::reference' and 'int')
   17 |         a[i] ^= b[i] ^ c;
      |         ~~~~~^~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:45,
                 from decoder.cpp:1:
/usr/include/c++/10/cstddef:168:3: note: candidate: 'constexpr std::byte& std::operator^=(std::byte&, std::byte)'
  168 |   operator^=(byte& __l, byte __r) noexcept
      |   ^~~~~~~~
/usr/include/c++/10/cstddef:168:20: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::byte&'
  168 |   operator^=(byte& __l, byte __r) noexcept
      |              ~~~~~~^~~
In file included from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from decoder.cpp:1:
/usr/include/c++/10/bits/ios_base.h:107:3: note: candidate: 'const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)'
  107 |   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
      |   ^~~~~~~~
/usr/include/c++/10/bits/ios_base.h:107:29: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::_Ios_Fmtflags&'
  107 |   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
      |              ~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/ios_base.h:149:3: note: candidate: 'const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)'
  149 |   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
      |   ^~~~~~~~
/usr/include/c++/10/bits/ios_base.h:149:29: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::_Ios_Openmode&'
  149 |   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
      |              ~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/ios_base.h:189:3: note: candidate: 'const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)'
  189 |   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
      |   ^~~~~~~~
/usr/include/c++/10/bits/ios_base.h:189:28: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::_Ios_Iostate&'
  189 |   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
      |              ~~~~~~~~~~~~~~^~~
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:105,
                 from decoder.cpp:1:
/usr/include/c++/10/future:170:18: note: candidate: 'std::launch& std::operator^=(std::launch&, std::launch)'
  170 |   inline launch& operator^=(launch& __x, launch __y)
      |                  ^~~~~~~~
/usr/include/c++/10/future:170:37: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::launch&'
  170 |   inline launch& operator^=(launch& __x, launch __y)
      |                             ~~~~~~~~^~~
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:127,
                 from decoder.cpp:1:
/usr/include/c++/10/charconv:688:3: note: candidate: 'constexpr std::chars_format& std::operator^=(std::chars_format&, std::chars_format)'
  688 |   operator^=(chars_format& __lhs, chars_format __rhs) noexcept
      |   ^~~~~~~~
/usr/include/c++/10/charconv:688:28: note:   no known conversion for argument 1 from 'std::bitset<600>::reference' to 'std::chars_format&'
  688 |   operator^=(chars_format& __lhs, chars_format __rhs) noexcept
      |              ~~~~~~~~~~~~~~^~~~~
decoder.cpp: In function 'std::bitset<600> f(const std::vector<int>&)':
decoder.cpp:27:25: error: 'n' was not declared in this scope
   27 |     for (int i = 0; i < n; i++) {
      |                         ^
decoder.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type]
   39 | }
      | ^