Submission #993138


Source Code Expand

#include <bits/stdc++.h>
 
#define REP(i,n) for(int i=0; i<(int)(n); ++i)
#define FOR(i,k,n) for(int i=(k);i<(int)(n);++i)
typedef long long int ll;
using namespace std;
vector<vector<int> > edge;
vector<bool> visit;

void dfs(int v) {
    if(visit[v]) return;
    visit[v] = true;
    for(int i=0; i<edge[v].size(); ++i) {
        dfs(edge[v][i]);
    }
}

int main(void) {
    int N, M;
    int K, L;
    cin >> N >> M;
    edge.resize(N+M);
    REP(i, N) {
        cin >> K;
        edge[i].resize(K);
        REP(j, K) {
            cin >> L;
            L = N+L-1;
            edge[i][j] = L;
            edge[L].push_back(i);
        }
    }
    visit.resize(N+M);
    dfs(0);
    REP(i, N) {
        if(!visit[i]) {
            cout << "NO" << endl;
            return 0;
        }
    }
    cout << "YES" << endl;
}

Submission Info

Submission Time
Task C - Interpretation
User kivantium
Language C++14 (GCC 5.4.1)
Score 400
Code Size 864 Byte
Status AC
Exec Time 75 ms
Memory 8440 KB

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 200 / 200 200 / 200
Status
AC × 2
AC × 12
AC × 25
Set Name Test Cases
sample sample-01.txt, sample-02.txt
dataset1 sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt
dataset2 sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 02-01.txt, 02-02.txt, 02-03.txt, 02-04.txt, 02-05.txt, 02-06.txt, 02-07.txt, 02-08.txt, 02-09.txt, 02-10.txt, 02-11.txt, 02-12.txt, 02-13.txt
Case Name Status Exec Time Memory
01-01.txt AC 3 ms 256 KB
01-02.txt AC 3 ms 256 KB
01-03.txt AC 3 ms 384 KB
01-04.txt AC 3 ms 256 KB
01-05.txt AC 3 ms 256 KB
01-06.txt AC 3 ms 256 KB
01-07.txt AC 3 ms 256 KB
01-08.txt AC 3 ms 256 KB
01-09.txt AC 3 ms 256 KB
01-10.txt AC 3 ms 384 KB
02-01.txt AC 53 ms 5376 KB
02-02.txt AC 64 ms 6144 KB
02-03.txt AC 51 ms 4096 KB
02-04.txt AC 70 ms 7040 KB
02-05.txt AC 67 ms 6016 KB
02-06.txt AC 71 ms 7040 KB
02-07.txt AC 69 ms 6144 KB
02-08.txt AC 54 ms 6136 KB
02-09.txt AC 75 ms 8440 KB
02-10.txt AC 58 ms 6140 KB
02-11.txt AC 58 ms 6140 KB
02-12.txt AC 57 ms 6144 KB
02-13.txt AC 58 ms 6016 KB
sample-01.txt AC 3 ms 256 KB
sample-02.txt AC 3 ms 256 KB