Submission #1273133

#	Time	Username	Problem	Language	Result	Execution time	Memory
1273133		sopaipilla	Airplane (NOI23_airplane)	C++20	0 / 100	46 ms	17604 KiB

Main

#include <bits/stdc++.h>
#define int long long
#define pii pair<int,int>
#define pb push_back
#define endl "\n"
using namespace std;

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, m;
    cin >> n >> m;
    int h[n];
    for(int &g : h) cin >> g;
    vector<pii> adj[n+1];
    for(int i=0; i<m; ++i) {
        int x, y;
        cin >> x >> y;
        int w=abs(h[x-1]-h[y-1]);
        if(!w) w=1;
        adj[x].pb({y,w});
        adj[y].pb({x,w});
    }
    
    int dist[n+1];
    const int inf=0x3f3f3f3f;
    memset(dist,inf,n+1);
    dist[1]=0;
    priority_queue<pii,vector<pii>,greater<pii>> pq;
    pq.push({0,1});
    while(!pq.empty()) {
        auto [d,at] = pq.top();
        pq.pop();
        if(d>dist[at]) continue;
        for(auto &[to,w] : adj[at]) {
            if((d+w)<dist[to]) {
                dist[to] = d+w;
                pq.push({d+w,to});
            }
        }
    }
    cout << dist[n] << endl;
}

• Subtask 1: 0 / 22
• Subtask 2: 0 / 10
• Subtask 3: 0 / 31
• Subtask 4: 0 / 37