Submission #3045147


Source Code Expand

#include <iostream>
#include <vector>
#include <string>
using namespace std;
typedef long long ll;
ll n, m;
vector<ll> vec[200100];
bool tsuka[200100];

void dfs(ll x){
    tsuka[x] = true;
    for (ll i = 0; i < vec[x].size(); i++){
        if (tsuka[vec[x][i]]) continue;
        dfs(vec[x][i]);
    }
}

int main(void){
    // Your code here!
    cin >> n >> m;
    for (ll i = 0; i < n + m; i++) tsuka[i] = false;
    for (ll i = 0; i < n; i++){
        ll k;
        cin >> k;
        for (ll j = 0; j < k; j++){
            ll l;
            cin >> l;
            l--;
            vec[i].push_back(n + l);
            vec[n + l].push_back(i);
        }
    }
    dfs(0);
    bool ans = true;
    for (ll i = 0; i < n; i++) {
        if (!tsuka[i]) ans = false;
    }
    cout << (ans ? "YES" : "NO") << endl;
}

Submission Info

Submission Time
Task C - Interpretation
User kwfumou1242
Language C++14 (GCC 5.4.1)
Score 400
Code Size 856 Byte
Status AC
Exec Time 58 ms
Memory 9216 KB

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 200 / 200 200 / 200
Status
AC × 2
AC × 12
AC × 27
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, sample-01.txt, sample-02.txt
Case Name Status Exec Time Memory
01-01.txt AC 3 ms 4992 KB
01-02.txt AC 3 ms 4992 KB
01-03.txt AC 3 ms 4992 KB
01-04.txt AC 3 ms 4992 KB
01-05.txt AC 3 ms 4992 KB
01-06.txt AC 4 ms 4992 KB
01-07.txt AC 3 ms 4992 KB
01-08.txt AC 3 ms 4992 KB
01-09.txt AC 3 ms 4992 KB
01-10.txt AC 3 ms 4992 KB
02-01.txt AC 48 ms 8704 KB
02-02.txt AC 49 ms 9216 KB
02-03.txt AC 46 ms 8448 KB
02-04.txt AC 58 ms 8576 KB
02-05.txt AC 54 ms 9216 KB
02-06.txt AC 58 ms 8576 KB
02-07.txt AC 55 ms 9216 KB
02-08.txt AC 39 ms 8944 KB
02-09.txt AC 53 ms 9076 KB
02-10.txt AC 44 ms 8948 KB
02-11.txt AC 44 ms 8948 KB
02-12.txt AC 45 ms 8832 KB
02-13.txt AC 46 ms 8832 KB
sample-01.txt AC 3 ms 4992 KB
sample-02.txt AC 3 ms 4992 KB