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 |
|
|
|
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 |