Zzuli:1044 failure rate

Title Description

Input n and n Students' grades ( The set of real Numbers ）, Output failure rate .

Input

The first line of input is an integer n, The second line is n A real number , Space off .

Output

Output a real number , Indicates the failure rate , The result is reserved 2 Decimal place , Take a line alone .

The sample input  Copy

8
98  45 86 79 56 75 90 70

Sample output  Copy

0.25

Tips

Be careful , The failure rate is 0 when , Output 0.00

#include <stdio.h>
int main()
{
	int i;
	double w,x,p=0,sump=0;
	scanf("%lf",&sump);
	for(i=0;i<sump;i++)
	{
		scanf("%lf",&x);
		if(x<60)
		{
		p=p+1;
	    }
	}
	w=p/sump;
	printf("%.2lf",w);
	return 0;
}