| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1035109 | 2024-07-26T04:56:02 Z | vjudge1 | Pipes (CEOI15_pipes) | C++17 | Compilation error |
0 ms | 0 KB |
include <iostream>
#include <vector>
using namespace std;
const int N = 1e5+2;
struct dsu {
int e[N];
int find(int &x) { return e[x] < 0 ? x : e[x] = find(e[x]); }
bool join(int a, int b) {
a = find(a), b = find(b);
if (a == b) return false;
if (e[a] > e[b]) swap(a, b);
e[a] += e[b]; e[b] = a;
return true;
}
} d1, d2;
vector<int> g[N];
int timer=0;
void dfs(int &at, int &par) {
d1.e[at]=d2.e[at]=++timer;
for(int &to:g[at]) {
if(to == par) {
par+=N;
continue;
}
if(d2.e[to]) {
d1.e[at]=min(d1.e[at], d2.e[to]);
} else {
dfs(to, at);
d1.e[at]=min(d1.e[at], d1.e[to]);
}
}
if(par>N)par-=N;
if(d1.e[at] == d2.e[at] and at!=par) {
printf("%d %d\n", at, par);
}
}
int n, m, u, v;
int main() {
srand(time(0));
scanf("%d %d", &n, &m);
//nt u, v;
for(int i = 1;i<N;i++)d1.e[i]=d2.e[i]=-1;
for(int i = 0;i<m;i++) {
scanf("%d %d", &u, &v);
if((d1.join(u, v) || d2.join(u, v))) {
g[u].push_back(v);
g[v].push_back(u);
}
}
for(int i = 1;i<N;i++)d1.e[i]=d2.e[i]=0;
for(int i= 1;i<=n;i++) {
if(!d1.e[i]) {
dfs(i, i);
}
}
}
Compilation message
pipes.cpp:1:1: error: 'include' does not name a type
1 | include <iostream>
| ^~~~~~~
In file included from /usr/include/c++/10/bits/stl_algobase.h:62,
from /usr/include/c++/10/vector:60,
from pipes.cpp:2:
/usr/include/c++/10/ext/type_traits.h:162:35: error: 'bool __gnu_cxx::__is_null_pointer' redeclared as different kind of entity
162 | __is_null_pointer(std::nullptr_t)
| ^
/usr/include/c++/10/ext/type_traits.h:157:5: note: previous declaration 'template<class _Type> bool __gnu_cxx::__is_null_pointer(_Type)'
157 | __is_null_pointer(_Type)
| ^~~~~~~~~~~~~~~~~
/usr/include/c++/10/ext/type_traits.h:162:26: error: 'nullptr_t' is not a member of 'std'
162 | __is_null_pointer(std::nullptr_t)
| ^~~~~~~~~
In file included from /usr/include/c++/10/bits/move.h:57,
from /usr/include/c++/10/bits/stl_pair.h:59,
from /usr/include/c++/10/bits/stl_algobase.h:64,
from /usr/include/c++/10/vector:60,
from pipes.cpp:2:
/usr/include/c++/10/type_traits:200:27: error: 'size_t' has not been declared
200 | template <typename _Tp, size_t = sizeof(_Tp)>
| ^~~~~~
/usr/include/c++/10/type_traits:402:26: error: 'std::size_t' has not been declared
402 | template<typename _Tp, std::size_t _Size>
| ^~~
/usr/include/c++/10/type_traits:403:25: error: '_Size' was not declared in this scope
403 | struct is_array<_Tp[_Size]>
| ^~~~~
/usr/include/c++/10/type_traits:403:31: error: template argument 1 is invalid
403 | struct is_array<_Tp[_Size]>
| ^
/usr/include/c++/10/type_traits:508:42: error: 'nullptr_t' is not a member of 'std'
508 | struct __is_null_pointer_helper<std::nullptr_t>
| ^~~~~~~~~
/usr/include/c++/10/type_traits:508:51: error: template argument 1 is invalid
508 | struct __is_null_pointer_helper<std::nullptr_t>
| ^
/usr/include/c++/10/type_traits:984:26: error: 'size_t' has not been declared
984 | template<typename _Tp, size_t _Num>
| ^~~~~~
/usr/include/c++/10/type_traits:985:49: error: '_Num' was not declared in this scope
985 | struct __is_nt_constructible_impl<true, _Tp[_Num]>
| ^~~~
/usr/include/c++/10/type_traits:985:54: error: template argument 2 is invalid
985 | struct __is_nt_constructible_impl<true, _Tp[_Num]>
| ^
/usr/include/c++/10/type_traits:1351:37: error: 'size_t' is not a member of 'std'
1351 | : public integral_constant<std::size_t, alignof(_Tp)>
| ^~~~~~
/usr/include/c++/10/type_traits:1351:57: error: template argument 1 is invalid
1351 | : public integral_constant<std::size_t, alignof(_Tp)>
| ^
/usr/include/c++/10/type_traits:1351:57: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1360:37: error: 'size_t' is not a member of 'std'
1360 | : public integral_constant<std::size_t, 0> { };
| ^~~~~~
/usr/include/c++/10/type_traits:1360:46: error: template argument 1 is invalid
1360 | : public integral_constant<std::size_t, 0> { };
| ^
/usr/include/c++/10/type_traits:1360:46: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1362:26: error: 'std::size_t' has not been declared
1362 | template<typename _Tp, std::size_t _Size>
| ^~~
/usr/include/c++/10/type_traits:1363:21: error: '_Size' was not declared in this scope
1363 | struct rank<_Tp[_Size]>
| ^~~~~
/usr/include/c++/10/type_traits:1363:27: error: template argument 1 is invalid
1363 | struct rank<_Tp[_Size]>
| ^
/usr/include/c++/10/type_traits:1364:37: error: 'size_t' is not a member of 'std'
1364 | : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
| ^~~~~~
/usr/include/c++/10/type_traits:1364:65: error: template argument 1 is invalid
1364 | : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
| ^
/usr/include/c++/10/type_traits:1364:65: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1368:37: error: 'size_t' is not a member of 'std'
1368 | : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
| ^~~~~~
/usr/include/c++/10/type_traits:1368:65: error: template argument 1 is invalid
1368 | : public integral_constant<std::size_t, 1 + rank<_Tp>::value> { };
| ^
/usr/include/c++/10/type_traits:1368:65: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1373:37: error: 'size_t' is not a member of 'std'
1373 | : public integral_constant<std::size_t, 0> { };
| ^~~~~~
/usr/include/c++/10/type_traits:1373:46: error: template argument 1 is invalid
1373 | : public integral_constant<std::size_t, 0> { };
| ^
/usr/include/c++/10/type_traits:1373:46: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1375:42: error: 'std::size_t' has not been declared
1375 | template<typename _Tp, unsigned _Uint, std::size_t _Size>
| ^~~
/usr/include/c++/10/type_traits:1376:23: error: '_Size' was not declared in this scope
1376 | struct extent<_Tp[_Size], _Uint>
| ^~~~~
/usr/include/c++/10/type_traits:1376:36: error: template argument 1 is invalid
1376 | struct extent<_Tp[_Size], _Uint>
| ^
/usr/include/c++/10/type_traits:1377:37: error: 'size_t' is not a member of 'std'
1377 | : public integral_constant<std::size_t,
| ^~~~~~
/usr/include/c++/10/type_traits:1378:24: error: '_Size' was not declared in this scope
1378 | _Uint == 0 ? _Size : extent<_Tp,
| ^~~~~
/usr/include/c++/10/type_traits:1379:28: error: template argument 1 is invalid
1379 | _Uint - 1>::value>
| ^
/usr/include/c++/10/type_traits:1379:28: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1384:37: error: 'size_t' is not a member of 'std'
1384 | : public integral_constant<std::size_t,
| ^~~~~~
/usr/include/c++/10/type_traits:1386:31: error: template argument 1 is invalid
1386 | _Uint - 1>::value>
| ^
/usr/include/c++/10/type_traits:1386:31: note: invalid template non-type parameter
/usr/include/c++/10/type_traits:1753:26: error: 'size_t' does not name a type
1753 | { static constexpr size_t __size = sizeof(_Tp); };
| ^~~~~~
In file included from /usr/include/c++/10/bits/move.h:57,
from /usr/include/c++/10/bits/stl_pair.h:59,
from /usr/include/c++/10/bits/stl_algobase.h:64,
from /usr/include/c++/10/vector:60,
from pipes.cpp:2:
/usr/include/c++/10/type_traits:1:1: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
+++ |+#include <cstddef>
1 | // C++11 <type_traits> -*- C++ -*-
In file included from /usr/include/c++/10/bits/move.h:57,
from /usr/include/c++/10/bits/stl_pair.h:59,
from /usr/include/c++/10/bits/stl_algobase.h:64,
from /usr/include/c++/10/vector:60,
from pipes.cpp:2:
/usr/include/c++/10/type_traits:1755:14: error: 'size_t' has not been declared
1755 | template<size_t _Sz, typename _Tp, bool = (_Sz <= _Tp::__size)>
| ^~~~~~
/usr/include/c++/10/type_traits:1755:48: error: '_Sz' was not declared in this scope
1755 | template<size_t _Sz, typename _Tp, bool = (_Sz <= _Tp::__size)>
| ^~~
/usr/include/c++/10/type_traits:1756:14: error: no default argument for '_Tp'
1756 | struct __select;
| ^~~~~~~~
/usr/include/c++/10/type_traits:1758:14: error: 'size_t' has not been declared
1758 | template<size_t _Sz, typename _Uint, typename... _UInts>
| ^~~~~~
/usr/include/c++/10/type_traits:1759:23: error: '_Sz' was not declared in this scope
1759 | struct __select<_Sz, _List<_Uint, _UInts...>, true>
| ^~~
/usr/include/c++/10/type_traits:1759:57: error: template argument 1 is invalid
1759 | struct __select<_Sz, _List<_Uint, _UInts...>, true>
| ^
/usr/include/c++/10/type_traits:1762:14: error: 'size_t' has not been declared
1762 | template<size_t _Sz, typename _Uint, typename... _UInts>
| ^~~~~~
/usr/include/c++/10/type_traits:1763:23: error: '_Sz' was not declared in this scope
1763 | struct __select<_Sz, _List<_Uint, _UInts...>, false>
| ^~~
/usr/include/c++/10/type_traits:1763:58: error: template argument 1 is invalid
1763 | struct __select<_Sz, _List<_Uint, _UInts...>, false>
| ^
/usr/include/c++/10/type_traits:1764:18: error: '_Sz' was not declared in this scope
1764 | : __select<_Sz, _List<_UInts...>>
| ^~~
/usr/include/c++/10/type_traits:1764:38: error: template argument 1 is invalid
1764 | : __select<_Sz, _List<_UInts...>>
| ^~
/usr/include/c++/10/type_traits:1755:60: error: '__size' is not a member of 'std::__make_unsigned_selector_base::_List<unsigned char, short unsigned int, unsigned int, long unsigned int, long long unsigned int>'
1755 | template<size_t _Sz, typename _Tp, bool = (_Sz <= _Tp::__size)>
| ^~~~~~
/usr/include/c++/10/type_traits:1777:68: error: template argument 3 is invalid
1777 | using __unsigned_type = typename __select<sizeof(_Tp), _UInts>::__type;
| ^
/usr/include/c++/10/type_traits:1781:40: error: '__unsigned_type' was not declared in this scope
1781 | = typename __match_cv_qualifiers<_Tp, __unsigned_type>::__type;
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/type_traits:1781:55: error: template argument 2 is invalid
1781 | = typename __match_cv_qualifiers<_Tp, __unsigned_type>::__type;
| ^
/usr/include/c++/10/type_traits:1793:61: error: '__type' in 'class std::__make_unsigned_selector<wchar_t, false, true>' does not name a type
1793 | = typename __make_unsigned_selector<wchar_t, false, true>::__type;
| ^~~~~~
/usr/include/c++/10/type_traits:1810:62: error: '__type' in 'class std::__make_unsigned_selector<char16_t, false, true>' does not name a type
1810 | = typename __make_unsigned_selector<char16_t, false, true>::__type;
| ^~~~~~
/usr/include/c++/10/type_traits:1817:62: error: '__type' in 'class std::__make_unsigned_selector<char32_t, false, true>' does not name a type
1817 | = typename __make_unsigned_selector<char32_t, false, true>::__type;
| ^~~~~~
/usr/include/c++/10/type_traits: In instantiation of 'class std::__make_unsigned_selector<wchar_t, true, false>':
/usr/include/c++/10/type_traits:1904:62: required from 'class std::__make_signed_selector<wchar_t, false, true>'
/usr/include/c++/10/type_traits:1919:57: required from here
/usr/include/c++/10/type_traits:1738:13: error: no type named '__type' in 'struct std::__make_unsigned<wchar_t>'
1738 | using __unsigned_type
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/type_traits:1742:13: error: no type named '__type' in 'struct std::__make_unsigned<wchar_t>'
1742 | using __type
| ^~~~~~
/usr/include/c++/10/type_traits:1919:59: error: invalid combination of multiple type-specifiers
1919 | = typename __make_signed_selector<wchar_t, false, true>::__type;
| ^~~~~~
/usr/include/c++/10/type_traits: In instantiation of 'class std::__make_unsigned_selector<char16_t, true, false>':
/usr/include/c++/10/type_traits:1904:62: required from 'class std::__make_signed_selector<char16_t, false, true>'
/usr/include/c++/10/type_traits:1936:58: required from here
/usr/include/c++/10/type_traits:1738:13: error: no type named '__type' in 'struct std::__make_unsigned<char16_t>'
1738 | using __unsigned_type
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/type_traits:1742:13: error: no type named '__type' in 'struct std::__make_unsigned<char16_t>'
1742 | using __type
| ^~~~~~
/usr/include/c++/10/type_traits:1936:60: error: invalid combination of multiple type-specifiers
1936 | = typename __make_signed_selector<char16_t, false, true>::__type;
| ^~~~~~
/usr/include/c++/10/type_traits: In instantiation of 'class std::__make_unsigned_selector<char32_t, true, false>':
/usr/include/c++/10/type_traits:1904:62: required from 'class std::__make_signed_selector<char32_t, false, true>'
/usr/include/c++/10/type_traits:1943:58: required from here
/usr/include/c++/10/type_traits:1738:13: error: no type named '__type' in 'struct std::__make_unsigned<char32_t>'
1738 | using __unsigned_type
| ^~~~~~~~~~~~~~~
/usr/include/c++/10/type_traits:1742:13: error: no type named '__type' in 'struct std::__make_unsigned<char32_t>'
1742 | using __type
| ^~~~~~
/usr/include/c++/10/type_traits:1943:60: error: invalid combination of multiple type-specifiers
1943 | = typename __make_signed_selector<char32_t, false, true>::__type;
| ^~~~~~
/usr/include/c++/10/type_traits:1975:26: error: 'std::size_t' has not been declared
1975 | template<typename _Tp, std::size_t _Size>
| ^~~
/usr/include/c++/10/type_traits:1976:30: error: '_Size' was not declared in this scope
1976 | struct remove_extent<_Tp[_Size]>
| ^~~~~
/usr/include/c++/10/type_traits:1976:36: error: template argument 1 is invalid
1976 | struct remove_extent<_Tp[_Size]>
| ^
/usr/include/c++/10/type_traits:1988:26: error: 'std::size_t' has not been declared
1988 | template<typename _Tp, std::size_t _Size>
| ^~~
/usr/include/c++/10/type_traits:1989:35: error: '_Size' was not declared in this scope
1989 | struct remove_all_extents<_Tp[_Size]>
| ^~~~~
/usr/include/c++/10/type_traits:1989:41: error: template argument 1 is invalid
1989 | struct remove_all_extents<_Tp[_Size]>
| ^
/usr/include/c++/10/type_traits:2047:12: error: 'std::size_t' has not been declared
2047 | template<std::size_t _Len>
| ^~~
/usr/include/c++/10/type_traits:2052:23: error: '_Len' was not declared in this scope
2052 | unsigned char __data[_Len];
| ^~~~
/usr/include/c++/10/type_traits:2067:12: error: 'std::size_t' has not been declared
2067 | template<std::size_t _Len, std::size_t _Align =
| ^~~
/usr/include/c++/10/type_traits:2067:30: error: 'std::size_t' has not been declared
2067 | template<std::size_t _Len, std::size_t _Align =
| ^~~
/usr/include/c++/10/type_traits:2068:48: error: '_Len' was not declared in this scope
2068 | __alignof__(typename __aligned_storage_msa<_Len>::__type)>
| ^~~~
/usr/include/c++/10/type_traits:2068:52: error: template argument 1 is invalid
2068 | __alignof__(typename __aligned_storage_msa<_Len>::__type)>
| ^
/usr/include/c++/10/type_traits:2073:23: error: '_Len' was not declared in this scope
2073 | unsigned char __data[_Len];
| ^~~~
/usr/include/c++/10/type_traits:2074:37: error: '_Align' was not declared in this scope
2074 | struct __attribute__((__aligned__((_Align)))) { } __align;
| ^~~~~~
/usr/include/c++/10/type_traits:2081:20: error: 'size_t' does not name a type
2081 | static const size_t _S_alignment = 0;
| ^~~~~~
/usr/include/c++/10/type_traits:2081:20: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/usr/include/c++/10/type_traits:2082:20: error: 'size_t' does not name a type
2082 | static const size_t _S_size = 0;
| ^~~~~~
/usr/include/c++/10/type_traits:2082:20: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/usr/include/c++/10/type_traits:2088:20: error: 'size_t' does not name a type
2088 | static const size_t _S_alignment =
| ^~~~~~
/usr/include/c++/10/type_traits:2088:20: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/usr/include/c++/10/type_traits:2091:20: error: 'size_t' does not name a type
2091 | static const size_t _S_size =
| ^~~~~~
/usr/include/c++/10/type_traits:2091:20: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/usr/include/c++/10/type_traits:2106:13: error: 'size_t' has not been declared
2106 | template <size_t _Len, typename... _Types>
| ^~~~~~
/usr/include/c++/10/type_traits:2113:20: error: 'size_t' does not name a type
2113 | static const size_t _S_len = _Len > __strictest::_S_size
| ^~~~~~
/usr/include/c++/10/type_traits:2113:20: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/usr/include/c++/10/type_traits:2117:20: error: 'size_t' does not name a type
2117 | static const size_t alignment_value = __strictest::_S_alignment;
| ^~~~~~
/usr/include/c++/10/type_traits:2117:20: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/usr/include/c++/10/type_traits:2119:40: error: '_S_len' was not declared in this scope
2119 | typedef typename aligned_storage<_S_len, alignment_value>::type type;
| ^~~~~~
/usr/include/c++/10/type_traits:2119:48: error: 'alignment_value' was not declared in this scope; did you mean 'alignment_of'?
2119 | typedef typename aligned_storage<_S_len, alignment_value>::type type;
| ^~~~~~~~~~~~~~~
|