Submission #76631281

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Source Code Expand

#include<bits/stdc++.h>
#define int long long
using namespace std;
int n;
vector<int> ans[105];
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin >> n;
	for (int i = 1 ; i <= n ; ++ i) {
		int k;
		cin >> k;
		for (int j = 1 ; j <= k ; ++ j) {
			int x;
			cin >> x;
			ans[x].push_back(i);
		}
	}
	for (int i = 1 ; i <= n ; ++ i) {
		sort(ans[i].begin(), ans[i].end());
		cout << ans[i].size() << ' ';
		for (auto x : ans[i]) {
			cout << x << ' ';
		}
		cout << endl;
	}
	return 0;
}

Submission Info

Judge Result