988C - Equal Sums - CodeForces Solution

#include <bits/stdc++.h>
using namespace std;
#define Orton     ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define ll long long
#define el endl
#define loop for(int j=0;j<n;j++)
#define tt int t,n;cin>>t;while(t--)
/*اللهم صل وسلم على نبينا محمد*/
int main() {
    Orton
    int k;
    cin >> k;
    vector<pair<int, pair<int, int>>> v;
    for (int i = 0; i < k; ++i) {
        int n, s = 0;
        cin >> n;
        vector<int> a(n);
        loop {cin >> a[j];s += a[j];}
        loop v.push_back({s - a[j], {i, j}});
    }
    sort(v.begin(), v.end());bool no = true;
    for (int i = 0; i < v.size() - 1; ++i) {
        if (v[i].first == v[i + 1].first && (v[i].second.first != v[i + 1].second.first)) {
            cout << "YES\n" << v[i + 1].second.first + 1 << " " << v[i + 1].second.second + 1 << el<< v[i].second.first + 1 << " " << v[i].second.second + 1;
            no = false;break;
        }
    }
    if (no)cout << "NO";
}