Submission #1139355

#	Time	Username	Problem	Language	Result	Execution time	Memory
1139355		seby1305	Cheap flights (LMIO18_pigus_skrydziai)	C++20	12 / 100	630 ms	102988 KiB

pigus_skrydziai

#include <bits/stdc++.h>
#define ll long long
#define pi pair<int, char>
#define pint pair<int, int>
#define ff first
#define ss second
#define pb push_back
#define all(v) v.begin(), v.end()
#define allsir(v) v+1, v+n+1
#define inf 1e9
using namespace std;

const string file = "";
ifstream fin(file+".in");
ofstream fout(file+".out");

const int dim = 500001, mod = 1e9+7;
int n, m, i, j;
ll gr[dim];
vector<pint> g[dim];
unordered_map<int, ll> ma[dim];

void solve()
{
    cin >> n >> m;
    int a, b, c;
    ll profit = 0;
    for (i = 1; i <= m; i++)
    {
        cin >> a >> b >> c;
        gr[a] += c;
        gr[b] += c;
        profit = max(profit, gr[a]);
        profit = max(profit, gr[b]);
        g[a].pb({b, c});
        g[b].pb({a, c});
        ma[a][b] = c;
        ma[b][a] = c;
    }
    if (n <= 200)
    {
        for (int nod = 1; nod <= n; nod++)
        {
            for (i = 0; i < g[nod].size(); i++)
                for (j = i+1; j < g[nod].size(); j++)
                {
                    int n2 = g[nod][i].ff, n3 = g[nod][j].ff;
                    if (ma[n2][n3])
                        profit = max(profit, ma[nod][n2]+ma[nod][n3]+ma[n2][n3]);
                }
        }
    }
    cout << profit;
}

int main()
{
    int t = 1;
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    //cin >> t;
    while (t--)
        solve();
    return 0;
}

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