제출 #316193

#제출 시각아이디문제언어결과실행 시간메모리
316193ScarletSStations (IOI20_stations)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #define pii pair<int,int> #define f first #define s second using namespace std; const int maxn = 1e3; int tin[maxn],tout[maxn],t; vector<int> edges[maxn]; vector<pii> temp; void dfs(int c, int p, bool h) { tin[c]=++t; for (int i : edges[c]) if (i!=p) dfs(i,c,h^1); tout[c]=++t; if (h) temp.push_back({tout[c],c}); else temp.push_back({tin[c],c}); } vector<int> label(int n, int k, vector<int> u, vector<int> v) { vector<int> labels(n); for (int i=0;i<n;++i) edges[i].clear(); for (int i=0;i<n-1;++i) { edges[u[i]].push_back(v[i]); edges[v[i]].push_back(u[i]); } temp.clear(); t=-1; dfs(0,-1,0); sort(temp.begin(), temp.end()); for (int i=0;i<n;++i) labels[temp[i].s]=i; return labels; } int find_next_station(int a, int b, vector<int> c) { int x = c.size(); vector<pii> v; sort(c.begin(), c.end()); if (a==0) { v.push_back({1,c[0]}); for (int i=1;i<x;++i) v.push_back({{c[i-1]+1,c[i]}}); for (pii i : v) if (i.f<=b&&b<=i.s) return i.s; while (1) ++s; } if (a<c[0]) { if (x>1) { v.push_back({a+1,c[0]}); if (a+1<=b&&b<=c[0]) return c[0]; for (int i=1;i<x-1;++i) if (c[i-1]+1<=b&&b<=c[i]) return c[i]; } return c.back(); } if (x>1) { if (c[x-1]<=b&&b<=a-1) return c[x-1]; for (int i=x-2;i>=0;--i) if (c[i]<=b&&b<=c[i+1]-1) return c[i]; } return c[0]; } /** int main() { ios_base::sync_with_stdio(0); cin.tie(0); int n; cin>>n; return 0; }**/

컴파일 시 표준 에러 (stderr) 메시지

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:53:42: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(<brace-enclosed initializer list>)'
   53 |             v.push_back({{c[i-1]+1,c[i]}});
      |                                          ^
In file included from /usr/include/c++/9/vector:67,
                 from /usr/include/c++/9/functional:62,
                 from /usr/include/c++/9/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/9/algorithm:71,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
                 from stations.cpp:1:
/usr/include/c++/9/bits/stl_vector.h:1184:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1184 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1184:35: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const std::pair<int, int>&'}
 1184 |       push_back(const value_type& __x)
      |                 ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/9/bits/stl_vector.h:1200:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::value_type = std::pair<int, int>]'
 1200 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1200:30: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<std::pair<int, int> >::value_type&&' {aka 'std::pair<int, int>&&'}
 1200 |       push_back(value_type&& __x)
      |                 ~~~~~~~~~~~~~^~~
stations.cpp:4:11: error: 'second' was not declared in this scope
    4 | #define s second
      |           ^~~~~~
stations.cpp:58:15: note: in expansion of macro 's'
   58 |             ++s;
      |               ^