Submission #76621608

---

Source Code Expand

#include <bits/stdc++.h>

using namespace std;

#define ll long long

int main() 
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> ans[n];
    for(int i = 0; i < n; i++)
    {
        int k;
        cin >> k;
        while(k--)
        {
            int x;
            cin >> x;
            x--;
            ans[x].push_back(i);
        }
    }
    for(int i = 0; i < n; i++)
    {
        sort(ans[i].begin(), ans[i].end());
        cout << ans[i].size() << ' ';
        for(int x : ans[i])
            cout << x + 1 << ' ';
        cout << '\n';
    }
    return 0;
}

Submission Info

Judge Result