Submission #1910916

---

Source Code Expand

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

int compare(const void *a, const void *b) {//qsort用の関数
	if (*(int*)a > *(int*)b) { return 1; }
	else if (*(int*)a == *(int*)b) { return 0; }
	return -1;
}
int main() {
	int N, K, R[100];

	scanf("%d %d",&N,&K);
	for (int i = 0; i < N; i++) {
		scanf("%d",&R[i]);
	}

	qsort(R,N,sizeof(int),compare);//昇順にソート

	float rate = 0;
	for (int i = N-K; i < N; i++) {
		rate += (float)R[i];
		rate /= 2.0f;
	}

	printf("%f",rate);

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&N,&K);
                      ^
./Main.cpp:14:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&R[i]);
                    ^

Judge Result