Submission #991498


Source Code Expand

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;
using D = double;
using uint = unsigned int;

#ifdef WIN32
    #define LLD "%I64d"
#else
    #define LLD "%lld"
#endif

#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second

const int maxn = 200005;

vector<int> gr[maxn];
bool was[maxn];
int n, m;

void go(int cur)
{
    if (was[cur]) return;
    was[cur] = true;
    for (auto t : gr[cur]) go(t);
}

int main()
{
    scanf("%d%d", &n, &m);
    for (int i =0 ; i < n; i++)
    {
        int k;
        scanf("%d", &k);
        for (int j = 0; j < k; j++)
        {
            int x;
            scanf("%d", &x);
            x--;
            gr[i].pb(n + x);
            gr[n + x].pb(i);
        }
    }
    go(0);
    for (int i = 0; i < n; i++) if (!was[i])
    {
        printf("NO\n");
        return 0;
    }
    printf("YES\n");
    return 0;
}

Submission Info

Submission Time
Task C - Interpretation
User KAN
Language C++14 (GCC 5.4.1)
Score 400
Code Size 1014 Byte
Status AC
Exec Time 41 ms
Memory 8704 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:37:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
                          ^
./Main.cpp:41:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &k);
                        ^
./Main.cpp:45:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &x);
                            ^

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 7 ms 4992 KB
01-02.txt AC 7 ms 4992 KB
01-03.txt AC 7 ms 4992 KB
01-04.txt AC 7 ms 4992 KB
01-05.txt AC 7 ms 4992 KB
01-06.txt AC 8 ms 4992 KB
01-07.txt AC 7 ms 4992 KB
01-08.txt AC 7 ms 4992 KB
01-09.txt AC 7 ms 4992 KB
01-10.txt AC 7 ms 4992 KB
02-01.txt AC 31 ms 7936 KB
02-02.txt AC 34 ms 8704 KB
02-03.txt AC 33 ms 7680 KB
02-04.txt AC 41 ms 8192 KB
02-05.txt AC 39 ms 8576 KB
02-06.txt AC 41 ms 8192 KB
02-07.txt AC 38 ms 8576 KB
02-08.txt AC 31 ms 8568 KB
02-09.txt AC 34 ms 8568 KB
02-10.txt AC 30 ms 8568 KB
02-11.txt AC 30 ms 8568 KB
02-12.txt AC 30 ms 8448 KB
02-13.txt AC 30 ms 8448 KB
sample-01.txt AC 7 ms 4992 KB
sample-02.txt AC 7 ms 4992 KB