oj.uz

Submission #536320

# Submission time Handle Problem Language Result Execution time Memory
536320 2022-03-12T21:08:05 Z rainboy 우호 조약 체결 (JOI14_friends) C
5 / 100
 4 ms 932 KB 
#include <stdio.h>

#define N	100

char adj[N][N]; int n, cnt;

void solve(int i, int j) {
	int k;

	if (adj[i][j] != 1)
		return;
	adj[i][j] = -1, cnt++;
	for (k = 0; k < n; k++)
		if (k != i && k != j && adj[i][k]) {
			if (!adj[j][k])
				adj[j][k] = 1, solve(j, k);
			if (!adj[k][j])
				adj[k][j] = 1, solve(k, j);
		}
}

int main() {
	int m, i, j;

	scanf("%d%d", &n, &m);
	while (m--) {
		scanf("%d%d", &i, &j), i--, j--;
		adj[i][j] = 1;
	}
	for (i = 0; i < n; i++)
		for (j = 0; j < n; j++)
			solve(i, j);
	printf("%d\n", cnt);
	return 0;
}

Compilation message

friends.c: In function 'main':
friends.c:25:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
friends.c:27:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 3 ms 724 KB Output is correct
8 Correct 4 ms 724 KB Output is correct
9 Correct 3 ms 852 KB Output is correct
10 Correct 3 ms 724 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 2 ms 932 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 340 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 65.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 308 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -