Submission #392517

#	Time	Username	Problem	Language	Result	Execution time	Memory
392517		keta_tsimakuridze	Cheap flights (LMIO18_pigus_skrydziai)	C++14	100 / 100	1635 ms	104912 KiB

pigus_skrydziai

#include<bits/stdc++.h>
#define f first
#define int long long
#define s second
using namespace std;
const int N=3e5+5,mod=1e9+7;
int t,n,m;
map<int,int> f[N];
vector<pair<int,int> >V[N];
string s;
 main(){
	// t=1;
	cin>>n>>m;
	for(int i=1;i<=m;i++){
		int u,v,w;
		cin>>u>>v>>w;
		V[u].push_back({w,v});
		V[v].push_back({w,u});
		f[u][v]=f[v][u]=w;
	}
	int ans = 0;
	for(int u=1;u<=n;u++){
		sort(V[u].begin(),V[u].end());
		reverse(V[u].begin(),V[u].end());
		int sum=0;
		for(int j=0;j<V[u].size();j++){
			sum += V[u][j].f;
		}
		if(V[u].size()>1) ans=max(ans,V[u][0].f+V[u][1].f+f[V[u][0].s][V[u][1].s]);
		ans=max(ans,sum);
	}
	cout<<ans;
}

Compilation message (stderr)

pigus_skrydziai.cpp:11:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 |  main(){
      |       ^
pigus_skrydziai.cpp: In function 'int main()':
pigus_skrydziai.cpp:26:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |   for(int j=0;j<V[u].size();j++){
      |               ~^~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 25 / 25
• Subtask 3: 16 / 16
• Subtask 4: 47 / 47