| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1059954 | parsadox2 | Thousands Islands (IOI22_islands) | C++17 | Compilation error | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#include "islands.h"
#include <variant>
#define F first
#define S second
using namespace std;
const int N = 1e5 + 10 , M = 2e5 + 10;
int n , m , dis[N] , st_tim[N] , fn_tim[N];
vector <pair<int , int>> adj[N];
pair <int , int> par[N] , bh[N];
bool marked[N];
void Dfs(int v)
{
marked[v] = true;
st_tim[v] = tim;
tim++;
for(auto u : adj[v])
{
if(!marked[u.F])
{
par[u.F] = make_pair(v , u.S);
dis[u.F] = dis[v] + 1;
Dfs(u.F);
}
else if(fn_tim[u.F] == 0)
{
if(bh[v].F == -1 || dis[bh[v].F] < dis[u.F])
bh[v] = u;
}
}
fn_tim[v] = tim;
}
void Solve1(int v)
{
vector <int> c;
c.push_back(bh[v].S);
int now = v;
while(now != bh[v].F)
{
c.push_back(par[now].S);
now = par[now].F;
}
reverse(c.begin() , c.end());
vector <int> p;
now = bh[v].F;
while(now != 0)
{
p.push_back(par[now].S);
now = par[now].F;
}
reverse(p.begin() , p.end());
vector <int> res;
for(auto u : p)
res.push_back(u);
reverse(p.begin() , p.end());
for(auto u : c)
res.push_back(u);
reverse(c.begin() , c.end());
for(auto u : p)
res.push_back(u);
reverse(p.begin() , p.end());
for(auto u : p)
res.push_back(u + 1);
reverse(p.begin() , p.end());
for(auto u : c)
res.push_back(u);
reverse(c.begin() , c.end());
for(auto u : p)
res.push_back(u + 1);
reverse(p.begin() , p.end());
return res;
}
variant<bool , vector <int>> find_journey(int nn , int mm , vector <int> U , vector <int> V)
{
n = nn;
m = mm;
for(int i = 0 ; i < m ; i++)
adj[U[i]].push_back({V[i] , i});
for(int i = 0 ; i < n ; i++)
bh[i] = make_pair(-1 , -1);
Dfs(0);
bool flg = false;
for(int i = 0 ; i < n ; i++)
{
if(bh[i] > 0)
{
flg = true;
auto res = Solve1(i);
return res;
}
if(bh[i] == 0)
flg = true;
}
if(!flg)
return false;
}
Compilation message (stderr)
islands.cpp: In function 'void Dfs(int)':
islands.cpp:17:14: error: 'tim' was not declared in this scope; did you mean 'time'?
17 | st_tim[v] = tim;
| ^~~
| time
islands.cpp: In function 'void Solve1(int)':
islands.cpp:74:9: error: return-statement with a value, in function returning 'void' [-fpermissive]
74 | return res;
| ^~~
islands.cpp: In function 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:89:12: error: no match for 'operator>' (operand types are 'std::pair<int, int>' and 'int')
89 | if(bh[i] > 0)
| ~~~~~ ^ ~
| | |
| | int
| std::pair<int, int>
In file included from /usr/include/c++/10/regex:62,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
from islands.cpp:1:
/usr/include/c++/10/bits/regex.h:1108:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
1108 | operator>(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
| ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1108:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/regex:62,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
from islands.cpp:1:
/usr/include/c++/10/bits/regex.h:1168:5: 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>&)'
1168 | operator>(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1168:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/regex:62,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
from islands.cpp:1:
/usr/include/c++/10/bits/regex.h:1261:5: 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>&)'
1261 | operator>(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1261:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/regex:62,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
from islands.cpp:1:
/usr/include/c++/10/bits/regex.h:1335:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
1335 | operator>(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1335:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/regex:62,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
from islands.cpp:1:
/usr/include/c++/10/bits/regex.h:1429:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
1429 | operator>(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1429:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/regex:62,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
from islands.cpp:1:
/usr/include/c++/10/bits/regex.h:1505:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
1505 | operator>(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1505:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/regex:62,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
from islands.cpp:1:
/usr/include/c++/10/bits/regex.h:1605:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator>(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
1605 | operator>(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1605:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:502:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
502 | operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
| ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:502:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: mismatched types 'const std::pair<_T1, _T2>' and 'int'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:378:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
378 | operator>(const reverse_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:378:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::reverse_iterator<_Iterator>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:416:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
416 | operator>(const reverse_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:416:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::reverse_iterator<_Iterator>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1469:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
1469 | operator>(const move_iterator<_IteratorL>& __x,
| ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1469:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::move_iterator<_IteratorL>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1519:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
1519 | operator>(const move_iterator<_Iterator>& __x,
| ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1519:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::move_iterator<_IteratorL>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/string_view:563:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(std::basic_string_view<_CharT, _Traits>, std::basic_string_view<_CharT, _Traits>)'
563 | operator> (basic_string_view<_CharT, _Traits> __x,
| ^~~~~~~~
/usr/include/c++/10/string_view:563:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/string_view:569:5: 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> >)'
569 | operator> (basic_string_view<_CharT, _Traits> __x,
| ^~~~~~~~
/usr/include/c++/10/string_view:569:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/string_view:576:5: 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>)'
576 | operator> (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
| ^~~~~~~~
/usr/include/c++/10/string_view:576:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6305:5: 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>&)'
6305 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6305:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6318:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
6318 | operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6318:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
89 | if(bh[i] > 0)
| ^
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 islands.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6330:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
6330 | operator>(const _CharT* __lhs,
| ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6330:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: mismatched types 'const _CharT*' and 'std::pair<int, int>'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/tuple:39,
from /usr/include/c++/10/functional:54,
from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10/algorithm:74,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
from islands.cpp:1:
/usr/include/c++/10/array:293:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> bool std::operator>(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)'
293 | operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
| ^~~~~~~~
/usr/include/c++/10/array:293:5: note: template argument deduction/substitution failed:
islands.cpp:89:14: note: 'std::pair<int, int>' is not derived from 'const std::array<_Tp, _Nm>'
89 | if(bh[i] > 0)
| ^
In file included from /usr/include/c++/10/functional:54,
from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10/algorithm:74,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
from islands.cpp:1:
/usr/include/c++/10/tuple:1454:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator>(const std::tuple<_Tps ...>&, const std::tuple<_UTypes ...>&)'
1454 | operator>(const tuple<_TElements...>& __t,
| ^~~~~~~~
/usr/include/c++/10/tuple:1454:5: note: template argument deduction/substitution failed:
islands.