제출 #883504

#제출 시각아이디문제언어결과실행 시간메모리
883504SalihSahinJakarta Skyscrapers (APIO15_skyscraper)C++14
컴파일 에러
0 ms0 KiB
#include<bits/stdc++.h> #define pb push_back #define int long long #define mp make_pair using namespace std; const int inf = 1e18; const int mod = 1e9 + 7; const int N = 2e3 + 5; vector<vector<int> > dis(N, vector<int>(N, inf)); int32_t main(){ ios_base::sync_with_stdio(false), cin.tie(); int n, m; cin>>n>>m; int start = 0, finish = 0; for(int i = 0; i < m; i++){ int b, p; cin>>b>>p; if(i == 0) start = b; if(i == 1) finish = b; for(int k = b%p; k < n; k += p){ dis[b][k] = min(dis[b][k], abs(b - k)/p); } } vector<pair<int, int> > adj[N]; for(int i = 0; i < n; i++){ for(int j = 0; j < n; j++){ if(i == j || dis[i][j] == inf) continue; adj[i].pb(mp(j, dis[i][j])); } } priority_queue<pair<int, int> > pq; vector<int> best(N, inf), vis(N); best[start] = 0; pq.push(mp(0, start)); while(pq.size()){ int node = pq.top().second; int len = pq.top().first * (-1); pq.pop(); if(vis[node]) continue; vis[node] = 1; for(auto itr: adj[node]){ if(best[itr.first] > best[node] + itr.second){ pq.push(mp(-(best[node] + itr.second), itr.first)); best[itr].first = best[node] + itr.second; } } } if(best[finish] == inf) cout<<-1<<endl; else cout<<best[finish]<<endl; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

skyscraper.cpp: In function 'int32_t main()':
skyscraper.cpp:52:21: error: no match for 'operator[]' (operand types are 'std::vector<long long int>' and 'std::pair<long long int, long long int>')
   52 |                 best[itr].first = best[node] + itr.second;
      |                     ^
In file included from /usr/include/c++/10/vector:67,
                 from /usr/include/c++/10/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
                 from skyscraper.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:1043:7: note: candidate: 'std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp, _Alloc>::size_type) [with _Tp = long long int; _Alloc = std::allocator<long long int>; std::vector<_Tp, _Alloc>::reference = long long int&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
 1043 |       operator[](size_type __n) _GLIBCXX_NOEXCEPT
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1043:28: note:   no known conversion for argument 1 from 'std::pair<long long int, long long int>' to 'std::vector<long long int>::size_type' {aka 'long unsigned int'}
 1043 |       operator[](size_type __n) _GLIBCXX_NOEXCEPT
      |                  ~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:1061:7: note: candidate: 'std::vector<_Tp, _Alloc>::const_reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp, _Alloc>::size_type) const [with _Tp = long long int; _Alloc = std::allocator<long long int>; std::vector<_Tp, _Alloc>::const_reference = const long long int&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
 1061 |       operator[](size_type __n) const _GLIBCXX_NOEXCEPT
      |       ^~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1061:28: note:   no known conversion for argument 1 from 'std::pair<long long int, long long int>' to 'std::vector<long long int>::size_type' {aka 'long unsigned int'}
 1061 |       operator[](size_type __n) const _GLIBCXX_NOEXCEPT
      |                  ~~~~~~~~~~^~~
skyscraper.cpp:43:13: warning: unused variable 'len' [-Wunused-variable]
   43 |         int len = pq.top().first * (-1);
      |             ^~~