Submission #2123569


Source Code Expand

#include <bits/stdc++.h>
using namespace std;

const int N = 100005;

int n, m;
int par[N];

int anc(int p) { return p == par[p] ? p : par[p] = anc(par[p]); }
void join(int p, int q) { par[anc(p)] = anc(q); }

int main() {
	scanf("%d %d", &n, &m);
	for (int i = 1; i <= n + m; ++i) par[i] = i;

	for (int i = 1; i <= n; ++i) {
		int k; scanf("%d", &k);
		while(k--) {
			int x; scanf("%d", &x); join(i, x + n);
		}
	}

	int p = anc(1);
	for (int i = 1; i <= n; ++i) if (anc(i) != p) {
		cout << "NO\n"; return 0;
	}
	cout << "YES\n";
}

Submission Info

Submission Time
Task C - Interpretation
User cheater2k
Language C++14 (GCC 5.4.1)
Score 200
Code Size 562 Byte
Status RE
Exec Time 327 ms
Memory 1408 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
                        ^
./Main.cpp:17:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   int k; scanf("%d", &k);
                         ^
./Main.cpp:19:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    int x; scanf("%d", &x); join(i, x + n);
                          ^

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 200 / 200 0 / 200
Status
AC × 2
AC × 12
AC × 23
RE × 4
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 1 ms 256 KB
01-02.txt AC 1 ms 256 KB
01-03.txt AC 1 ms 256 KB
01-04.txt AC 1 ms 256 KB
01-05.txt AC 1 ms 256 KB
01-06.txt AC 1 ms 256 KB
01-07.txt AC 1 ms 256 KB
01-08.txt AC 1 ms 256 KB
01-09.txt AC 1 ms 256 KB
01-10.txt AC 1 ms 256 KB
02-01.txt RE 327 ms 640 KB
02-02.txt AC 18 ms 640 KB
02-03.txt AC 14 ms 512 KB
02-04.txt RE 98 ms 640 KB
02-05.txt AC 18 ms 768 KB
02-06.txt RE 98 ms 640 KB
02-07.txt AC 18 ms 640 KB
02-08.txt AC 16 ms 640 KB
02-09.txt RE 98 ms 640 KB
02-10.txt AC 15 ms 1408 KB
02-11.txt AC 15 ms 1408 KB
02-12.txt AC 15 ms 768 KB
02-13.txt AC 15 ms 768 KB
sample-01.txt AC 1 ms 256 KB
sample-02.txt AC 1 ms 256 KB