Submission #886089

#	Time	Username	Problem	Language	Result	Execution time	Memory
886089		vjudge1	Airplane (NOI23_airplane)	C++17	0 / 100	136 ms	13684 KiB

Main

#include <bits/stdc++.h>
using namespace std;
const int INF = INT_MAX;
int main(){
	int n,m;cin>>n>>m;
	vector<int> val(n);
	for (int i = 0; i < n; ++i)
	{
		cin>>val[i];
	}
	vector<vector<int>> arr(n);
	for (int i = 0; i < m; i++){
		int u,v;cin>>u>>v;
		arr[u-1].push_back(v-1);
		arr[v-1].push_back(u-1);
	}
	vector<pair<int,int>> dp(n,{INF,INF});
	priority_queue<array<int,3>,vector<array<int,3>>,greater<array<int,3>>> pq;
	pq.push({0,0,0});
	while (pq.size()){
		int node = pq.top()[2];
		int w = pq.top()[0];
		int dist = pq.top()[1];
		pq.pop();
		w-=dist;
		if (dp[node].first<w+dist) continue;
		if (dp[node].first==w+dist && dp[node].second<dist) continue;
		dp[node]={w+dist,dist};
		for (int i = 0; i < arr[node].size(); i++){
			pq.push({max(w,val[arr[node][i]])+dist+1,dist+1,arr[node][i]});
		}
	}
	cout<<dp[n-1].first<<endl;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:29:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   for (int i = 0; i < arr[node].size(); i++){
      |                   ~~^~~~~~~~~~~~~~~~~~

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