Submission #973562

#	Time	Username	Problem	Language	Result	Execution time	Memory
973562		AtabayRajabli	Cheap flights (LMIO18_pigus_skrydziai)	C++17	100 / 100	1242 ms	99924 KiB

pigus_skrydziai

#include <bits/stdc++.h>
#define int ll
#define all(v) v.begin(), v.end()
 
// author : a1abay
 
using namespace std;
 
typedef long long ll;
typedef long double ld;
const int sz = 3e5 + 5;
const int inf = 1e9 + 7;
 
int n, m, ans, u, v, w;
vector<array<int, 2>> g[sz];
map<array<int, 2>, int> e;

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> m;
    for(int i = 1; i <= m; i++)
    {
        cin >> u >> v >> w;
        g[u].push_back({w, v});
        g[v].push_back({w, u});
        e[{u, v}] = w;
        e[{v, u}] = w;
    }

    for(int i = 1; i <= n; i++)
    {
        sort(all(g[i]));
        reverse(all(g[i]));
        int s = 0;
        for(auto p : g[i]) s += p[0];
        ans = max(ans, s);
    }

    for(int i = 1; i <= n; i++)
    {
        if(g[i].size() < 2) continue;
        if(!e[{g[i][0][1], g[i][1][1]}]) continue;
        ans = max(ans, g[i][0][0] + g[i][1][0] + e[{g[i][0][1], g[i][1][1]}]);
    }

    cout << ans;
}

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