Submission #784044

#	Time	Username	Problem	Language	Result	Execution time	Memory
784044		rainboy	Island (NOI18_island)	C11	100 / 100	54 ms	5324 KiB

island

#include <stdio.h>

#define N	200000
#define M	200000

int main() {
	static int dd[M], kk[N + M];
	int n, m, h, i, j, a;

	scanf("%d%d", &n, &m);
	for (h = 0; h < n + m - 1; h++) {
		scanf("%d%d", &i, &j), i--, j--;
		if (i >= n)
			dd[i - n]++;
		if (j >= n)
			dd[j - n]++;
	}
	for (i = 0; i < m; i++)
		kk[dd[i] - 1]++;
	for (a = n + m - 1; a >= 0; a--)
		kk[a] += kk[a + 1];
	for (a = 2; a < n + m; a++)
		if (kk[a] > 0)
			printf("%d %d\n", a, kk[a]);
	return 0;
}

Compilation message (stderr)

island.c: In function 'main':
island.c:10:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
island.c:12:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 20 / 20
• Subtask 3: 31 / 31
• Subtask 4: 42 / 42