제출 #857415

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
857415		CMJ	A Huge Tower (CEOI10_tower)	C11	30 / 100	105 ms	5912 KiB

tower

#include <stdio.h>
#include <stdlib.h>

int int_cmp(const void *a, const void *b)
{
	return (*((int *)a)) - (*((int *)b));
}

int b[1000000];

#define MOD 1000000009

int main()
{
	int n, d;
	scanf("%d %d\n", &n, &d);
	int sol = 1;

	for(int i = 0; i < n; i++) {
		scanf("%d", b + i);
	}

	qsort(b, n, sizeof(int), int_cmp);

	int l = 0, r = 0;
	while(l < n) {
		while((r < n) && (b[r] <= b[l] + d))
			r++;
		sol = (sol * (r - l)) % MOD;
		l++;
	}
	printf("%d\n", sol);
}

컴파일 시 표준 에러 (stderr) 메시지

tower.c: In function 'main':
tower.c:16:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  scanf("%d %d\n", &n, &d);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~
tower.c:20:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf("%d", b + i);
      |   ^~~~~~~~~~~~~~~~~~

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