제출 #465482

#제출 시각아이디문제언어결과실행 시간메모리
465482MohamedFaresNebili악어의 지하 도시 (IOI11_crocodile)C++14
0 / 100
1 ms316 KiB
#include <bits/stdc++.h> #include "crocodile.h" using namespace std; int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) { int n=N, m=M, k=K; vector<pair<long long, int>>adj[n]; vector<bool>exit(n, false); vector<long long>d(n, 1e10); vector<bool>queued(n, false); priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>>pq; for(int l=0;l<m;l++) { int a=R[l][0], b=R[l][1]; long long w=L[l]; adj[a].push_back({b, w}); adj[b].push_back({a, w}); } vector<bool>used(n, false); for(int l=0;l<k;l++) { int a=P[l]; queued[a]=true; pq.push({0, a}); d[a]=0; used[a]=true; } vector<long long>len[n]; vector<int>income(n, 0); queue<int>q; while(!pq.empty()) { int a=pq.top().second; long long w=pq.top().second; pq.pop(); for(auto u:adj[a]) { int to=u.first; long long s=u.second; if(queued[to]) continue; if(!used[to]) { q.push(to); used[to]=true; } len[to].push_back(d[a]+s); income[to]++; } if(pq.empty()) { while(!q.empty()) { int to=q.front(); q.pop(); if(income[to]==1) continue; sort(len[to].begin(), len[to].end()); pq.push({len[to][1], to}); queued[to]=true; d[to]=len[to][1]; } } } return (d[0]!=1e10?d[0]:-1); }

컴파일 시 표준 에러 (stderr) 메시지

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:21:42: warning: unused variable 'w' [-Wunused-variable]
   21 |         int a=pq.top().second; long long w=pq.top().second; pq.pop();
      |                                          ^
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