Submission #1194671

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Source Code Expand

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

int llintcmp(const void *a, const void *b) {
	long long c = *(long long*)a-*(long long*)b;
	if (c>0LL) return -1;
	else if (c==0LL) return 0;
	else return 1;
}

long long a[300010];

int main(void) {
	int i, N;
	long long T=0LL;

	scanf("%d", &N);
	for (i=0;i<3*N;i++) scanf("%lld", &a[i]);

	qsort(a,3*N,sizeof(long long),llintcmp);
	for (i=1;i<=N;i+=2) T += a[i];
	printf("%lld\n", T);	

	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:18:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ^
./Main.c:19:22: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  for (i=0;i<3*N;i++) scanf("%lld", &a[i]);
                      ^

Judge Result