제출 #892343

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
892343		d4xn	사이버랜드 (APIO23_cyberland)	C++17	컴파일 에러	0 ms	0 KiB

cyberland

#include "cyberland.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long

const int N = 1e5+5;

ll dis[2][N];
vector<pair<int, ll>> adj[N];

void dijkstra(int x, int idx) {
    priority_queue<pair<ll, int>> pq;
    pq.push(make_pair(-0, x));
    while (!pq.empty()) {
      ll d = -pq.top().first;
      int y = pq.top().second;
      pq.pop();

      if (dis[idx][y] != -1) continue;
      dis[idx][y] = d;

      if (!idx && y == h) continue;
      for (auto& [z, d2] : adj[y]) {
        if (dis[idx][z] != -1) continue;
        pq.push(make_pair(-(d+d2), z));
      }
    }
}

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++) {
      adj[i].clear();
    }
    
    for (int i = 0; i < m; i++) {
        adj[x[i]].push_back(make_pair(y[i], c[i]));
        adj[y[i]].push_back(make_pair(x[i], c[i]));
    }

    for (int i = 0; i < n; i++) {
        dis[0][i] = dis[1][i] = -1;
    }
    dijkstra(0, 0);
    dijkstra(h, 1);/*
for (int i = 0; i < n; i++) {
        cerr << dis[0][i] << " " << dis[1][i] << endl;
    }*/
    ll ans = dis[0][h];
    for (int i = 0; i < n; i++) {
      //assert(arr[i] >= 0 && arr[i] < 2);
      if (arr[i] || dis[0][i] == -1 || dis[1][i] == -1) continue;

      ans = min(ans, dis[1][i]);
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

cyberland.cpp: In function 'void dijkstra(int, int)':
cyberland.cpp:23:24: error: 'h' was not declared in this scope
   23 |       if (!idx && y == h) continue;
      |                        ^