제출 #28474

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
28474		탕탕탕! 핑거팁 니 맘을 겨눌게~ (#68)	포도주 시음 (FXCUP2_wine)	C11	0 / 1	0 ms	2288 KiB

wine

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

int wine[300000];
int compare_func(void* arg1, void* arg2) {
	return (*(int*)arg1 - *(int*)arg2);
}
int main() {
	int N, K, i, first = 0, end = 1;
	long long int flavor = 0;
	scanf("%d %d", &N, &K);
	for (i = 0; i < N; i++)
		scanf("%d", &wine[i]);
	qsort(wine, N, sizeof(int), compare_func);
	for (i = 0; i < K; i++) {
		if (i == 0) {
			flavor = wine[N - end];
			end++;
			continue;
		}
		if (i % 2 == 0) {
			flavor += wine[N - end] - wine[0 + first];
			end++;
			first++;
		}
	}
	printf("%lld", flavor);
}

컴파일 시 표준 에러 (stderr) 메시지

wine.c: In function 'main':
wine.c:14:30: warning: passing argument 4 of 'qsort' from incompatible pointer type [-Wincompatible-pointer-types]
  qsort(wine, N, sizeof(int), compare_func);
                              ^
In file included from wine.c:2:0:
/usr/include/stdlib.h:764:13: note: expected '__compar_fn_t {aka int (*)(const void *, const void *)}' but argument is of type 'int (*)(void *, void *)'
 extern void qsort (void *__base, size_t __nmemb, size_t __size,
             ^
wine.c:11:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &N, &K);
  ^
wine.c:13:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &wine[i]);
   ^

• Subtask 1: 0 / 1