제출 #750460

#제출 시각아이디문제언어결과실행 시간메모리
750460Gurban사이버랜드 (APIO23_cyberland)C++17
0 / 100
31 ms7676 KiB
#include "cyberland.h" #include <bits/stdc++.h> using namespace std; using ld = long double; const double inf = 1e16; const int maxn=1e5+5; const double eps = 0.00000001; int D[maxn]; vector<pair<int,double>>E[maxn]; double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) { for(int i = 0;i < N;i++) E[i].clear(); for(int i = 0;i < M;i++){ E[x[i]].push_back({y[i],c[i]}); E[y[i]].push_back({x[i],c[i]}); } // for(int i = 1;i < N;i++) D[i] = 1e9; // D[0] = 0; // deque<int>deq; // vector<bool>vis(N); // deq.push_back(0); // while(!deq.empty()){ // int x = deq.front(); // deq.pop_front(); // if(vis[x]) continue; // vis[x] = 1; // for(auto i : E[x]){ // if(D[x] + (arr[i.first] == 2) < D[i.first]){ // D[i.first] = D[x] + (arr[i.first] == 2); // if(arr[i.first] != 2) deq.push_front(i.first); // else deq.push_back(i.first); // } // } // } vector<int>zeros = {0}; // vector<int>two; for(int i = 1;i < N;i++) if(arr[i] == 0) zeros.push_back(i); // for(int i = 1;i < N;i++) if(arr[i] == 2) two.push_back(i); priority_queue<pair<int,int>>q; q.push({0,H}); int ans = inf; // double der = 1; for(int i = 0;i <= 0;i++){ vector<int>dis(N,inf); dis[H] = 0; vector<bool>vis(N,0); while(!q.empty()){ int x = q.top().second; int len = -q.top().first; q.pop(); if(vis[x]) continue; vis[x] = 1; for(auto j : E[x]){ int now = j.second + dis[x]; if(dis[j.first] > now){ dis[j.first] = now; q.push({-now,j.first}); } } } for(auto j : zeros) ans = min(ans,dis[j]); // for(auto j : two) if(abs(dis[j] - inf) >= eps) q.push({-dis[j],j}); // der *= 2; } // if(abs(ans - inf) < eps) return -1; return ans; }

컴파일 시 표준 에러 (stderr) 메시지

cyberland.cpp: In function 'double solve(int, int, int, int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:46:15: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+16' to '2147483647' [-Woverflow]
   46 |     int ans = inf;
      |               ^~~
cyberland.cpp:50:26: warning: overflow in conversion from 'double' to 'std::vector<int>::value_type' {aka 'int'} changes value from '1.0e+16' to '2147483647' [-Woverflow]
   50 |         vector<int>dis(N,inf);
      |                          ^~~
cyberland.cpp:56:17: warning: unused variable 'len' [-Wunused-variable]
   56 |             int len = -q.top().first;
      |                 ^~~
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