Submission #122027

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Source Code Expand

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

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

int main( void ) {
	int i;
	int n, k, r[ 100 ];
	double ans;

	scanf( "%d %d", &n, &k );
	for ( i = 0; i < n; i++ )
		scanf( "%d", r + i );

	qsort( r, n, sizeof(int), &compare );

	ans = 0.0;
	for ( i = n - k; i < n; i++ )
		ans = ( ans + r[ i ] ) / 2.0; 

	printf( "%.9f\n", ans );

	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:13:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
./Main.c:15:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]

Judge Result