Submission #795923

#	Time	Username	Problem	Language	Result	Execution time	Memory
795923		vjudge1	Cheap flights (LMIO18_pigus_skrydziai)	C++17	12 / 100	3086 ms	96968 KiB

pigus_skrydziai

#include<stdio.h>
#include<iostream>
#include<algorithm>
#include<vector>
#include<map>

using namespace std;

#define mp make_pair
#define pb push_back
#define pii pair<int, int>

const int maxN = 1e6 + 10;

vector<pii> v[maxN];
long long cnt[maxN];
map<pii, int> mapa;
int n, m;
int mx;

int main() {

    cin >> n >> m;
	

    for (int i = 1; i<=m; i++) {
    	int x, y, z;
    	scanf("%d%d%d", &x, &y, &z);
    	cnt[x]+=z;
    	cnt[y]+=z;
    	v[x].pb(mp(y,z));
    	v[y].pb(mp(x, z));
    	mapa[mp(x, y)] = z;
    	mapa[mp(y, x)] = z;
    	mx = max(mx, z);
    }


    long long ans = 0;

    for (int i = 1; i<=n; i++) {
    	ans = max(ans, cnt[i]);
    }

    if (mx > 1) {

    for (int x = 1; x<=n; x++) {
    	for (auto y : v[x]) {
    	for (auto z: v[y.first]) {
    			if (mapa.count(mp(x, z.first)))
    			ans = max(ans, 1ll * y.second + z.second + mapa[mp(x, z.first)]);
    		}
    	}
    }
   }

    cout << ans << endl;

	return 0;
}

Compilation message (stderr)

pigus_skrydziai.cpp: In function 'int main()':
pigus_skrydziai.cpp:28:11: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |      scanf("%d%d%d", &x, &y, &z);
      |      ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 0 / 25
• Subtask 3: 0 / 16
• Subtask 4: 0 / 47