| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1305866 | farica | Combo (IOI18_combo) | C++20 | Compilation error | 0 ms | 0 KiB |
#include "combo.h"
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
using vi = vector<int>;
using pi = pair<int,int>;
string guess_sequence(int N) {
string ans = "";
int prev = 1, tmp = press("A");
if(tmp) ans = "A";
else if(press("B")) ans = "B";
else if(press("X")) ans = "X";
vector<char>c({'A', 'B', 'X', 'Y'});
for(int i=0; i<4; ++i) {
if(c[i] == ans[0]) {
c.erase(c.begin()+i);
break;
}
}
for(int i=1; i<N-1; ++i) {
string nw = ans + c[0] + c[0] + ans + c[0] + c[1] + ans + c[0] + c[2] + ans + c[1];
tmp = press(nw);
int len = (int)ans.length();
if(tmp == len+1) ans += c[1];
else if(tmp == len+2) ans += c[0];
else ans += c[2];
}
for(int ch: c) {
if(press(ans+ch) == N) {
ans += ch;
return ans;
}
}
}
Compilation message (stderr)
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:30:29: error: no match for 'operator+' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'int')
30 | if(press(ans+ch) == N) {
| ~~~^~~
| | |
| | int
| std::string {aka std::__cxx11::basic_string<char>}
In file included from /usr/include/c++/13/string:48,
from combo.h:3,
from combo.cpp:1:
/usr/include/c++/13/bits/stl_iterator.h:634:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_IteratorL> std::operator+(typename reverse_iterator<_IteratorL>::difference_type, const reverse_iterator<_IteratorL>&)'
634 | operator+(typename reverse_iterator<_Iterator>::difference_type __n,
| ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:634:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::reverse_iterator<_IteratorL>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/stl_iterator.h:1808:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename move_iterator<_IteratorL>::difference_type, const move_iterator<_IteratorL>&)'
1808 | operator+(typename move_iterator<_Iterator>::difference_type __n,
| ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:1808:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
In file included from /usr/include/c++/13/string:54:
/usr/include/c++/13/bits/basic_string.h:3553:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
3553 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3553:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3571:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
3571 | operator+(const _CharT* __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3571:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const _CharT*' and 'std::__cxx11::basic_string<char>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3590:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
3590 | operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3590:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3607:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
3607 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3607:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const _CharT*' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3625:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
3625 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3625:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: deduced conflicting types for parameter '_CharT' ('char' and 'int')
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3637:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
3637 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3637:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3644:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
3644 | operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3644:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3651:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
3651 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3651:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3674:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
3674 | operator+(const _CharT* __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3674:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const _CharT*' and 'std::__cxx11::basic_string<char>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3681:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
3681 | operator+(_CharT __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3681:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3688:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const _CharT*)'
3688 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3688:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const _CharT*' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/basic_string.h:3695:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> constexpr std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, _CharT)'
3695 | operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3695:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: deduced conflicting types for parameter '_CharT' ('char' and 'int')
30 | if(press(ans+ch) == N) {
| ^~
In file included from /usr/include/c++/13/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:127,
from combo.cpp:2:
/usr/include/c++/13/complex:335:5: note: candidate: 'template<class _Tp> constexpr std::complex<_Tp> std::operator+(const complex<_Tp>&, const complex<_Tp>&)'
335 | operator+(const complex<_Tp>& __x, const complex<_Tp>& __y)
| ^~~~~~~~
/usr/include/c++/13/complex:335:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::complex<_Tp>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/complex:344:5: note: candidate: 'template<class _Tp> constexpr std::complex<_Tp> std::operator+(const complex<_Tp>&, const _Tp&)'
344 | operator+(const complex<_Tp>& __x, const _Tp& __y)
| ^~~~~~~~
/usr/include/c++/13/complex:344:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::complex<_Tp>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/complex:353:5: note: candidate: 'template<class _Tp> constexpr std::complex<_Tp> std::operator+(const _Tp&, const complex<_Tp>&)'
353 | operator+(const _Tp& __x, const complex<_Tp>& __y)
| ^~~~~~~~
/usr/include/c++/13/complex:353:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::complex<_Tp>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/complex:454:5: note: candidate: 'template<class _Tp> constexpr std::complex<_Tp> std::operator+(const complex<_Tp>&)'
454 | operator+(const complex<_Tp>& __x)
| ^~~~~~~~
/usr/include/c++/13/complex:454:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::complex<_Tp>'
30 | if(press(ans+ch) == N) {
| ^~
In file included from /usr/include/c++/13/valarray:605,
from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:166:
/usr/include/c++/13/bits/valarray_after.h:405:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__plus, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const _Expr<_Dom1, typename _Dom1::value_type>&, const _Expr<_Dom2, typename _Dom2::value_type>&)'
405 | _DEFINE_EXPR_BINARY_OPERATOR(+, struct std::__plus)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__plus, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const _Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)'
405 | _DEFINE_EXPR_BINARY_OPERATOR(+, struct std::__plus)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__plus, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const typename _Dom::value_type&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
405 | _DEFINE_EXPR_BINARY_OPERATOR(+, struct std::__plus)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__plus, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const _Expr<_Dom1, typename _Dom1::value_type>&, const valarray<typename _Dom::value_type>&)'
405 | _DEFINE_EXPR_BINARY_OPERATOR(+, struct std::__plus)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__plus, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__plus, typename _Dom1::value_type>::result_type> std::operator+(const valarray<typename _Dom::value_type>&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
405 | _DEFINE_EXPR_BINARY_OPERATOR(+, struct std::__plus)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/bits/valarray_after.h:405:5: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/valarray:1196:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__plus, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const valarray<_Tp>&, const valarray<_Tp>&)'
1196 | _DEFINE_BINARY_OPERATOR(+, __plus)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/valarray:1196:1: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::valarray<_Tp>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/valarray:1196:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__plus, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const valarray<_Tp>&, const typename valarray<_Tp>::value_type&)'
1196 | _DEFINE_BINARY_OPERATOR(+, __plus)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/valarray:1196:1: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: 'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::valarray<_Tp>'
30 | if(press(ans+ch) == N) {
| ^~
/usr/include/c++/13/valarray:1196:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__plus, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__plus, _Tp>::result_type> std::operator+(const typename valarray<_Tp>::value_type&, const valarray<_Tp>&)'
1196 | _DEFINE_BINARY_OPERATOR(+, __plus)
| ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/valarray:1196:1: note: template argument deduction/substitution failed:
combo.cpp:30:30: note: mismatched types 'const std::valarray<_Tp>' and 'int'
30 | if(press(ans+ch) == N) {
| ^~
combo.cpp:35:1: warning: control reaches end of non-void function [-Wreturn-type]
35 | }
| ^