Submission #992698


Source Code Expand

#include <iostream>
#include <string.h>

using namespace std;

#define pb push_back
#define mp make_pair
#define ll long long
#define ull unsigned ll
#define db double
#define INF 0x3f3f3f3f
#define MOD 1000000007
#define PII pair<int, int>

int n,m,k;
int dsu[100010];

int fi(int x) {
    return x==dsu[x] ? x : (dsu[x]=fi(dsu[x]));
}

int main() {
    scanf("%d%d",&n,&m);
    for (int i=0;i<=m;i++) dsu[i]=i;
    for (int i=0;i<n;i++) {
        scanf("%d",&k);
        int first,l;
        scanf("%d",&first);
        for (int j=1;j<k;j++) {
            scanf("%d",&l);
            if (fi(first)!=fi(l)) {
                dsu[fi(first)]=fi(l);
            }
        }
    }
    int root=fi(1);
    for (int i=2;i<=m;i++) {
        if (fi(i)!=root) {
            printf("NO\n");
            return 0;
        }
    }
    printf("YES\n");
}

Submission Info

Submission Time
Task C - Interpretation
User oos1111
Language C++14 (GCC 5.4.1)
Score 0
Code Size 887 Byte
Status WA
Exec Time 19 ms
Memory 1152 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:24:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
                        ^
./Main.cpp:27:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&k);
                       ^
./Main.cpp:29:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&first);
                           ^
./Main.cpp:31:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&l);
                           ^

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 0 / 200 0 / 200
Status
AC × 1
WA × 1
AC × 6
WA × 6
AC × 13
WA × 12
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 2 ms 256 KB
01-02.txt WA 3 ms 256 KB
01-03.txt AC 3 ms 256 KB
01-04.txt AC 3 ms 256 KB
01-05.txt AC 3 ms 256 KB
01-06.txt WA 3 ms 256 KB
01-07.txt WA 3 ms 256 KB
01-08.txt AC 3 ms 256 KB
01-09.txt WA 3 ms 256 KB
01-10.txt WA 3 ms 256 KB
02-01.txt WA 16 ms 640 KB
02-02.txt AC 18 ms 256 KB
02-03.txt AC 16 ms 384 KB
02-04.txt WA 18 ms 640 KB
02-05.txt WA 18 ms 256 KB
02-06.txt AC 18 ms 640 KB
02-07.txt WA 18 ms 256 KB
02-08.txt AC 17 ms 256 KB
02-09.txt WA 19 ms 640 KB
02-10.txt AC 17 ms 1152 KB
02-11.txt AC 17 ms 1152 KB
02-12.txt WA 16 ms 512 KB
02-13.txt AC 16 ms 512 KB
sample-01.txt WA 2 ms 256 KB
sample-02.txt AC 3 ms 256 KB