[1546] 평균

#include <stdio.h>
int main()
{
	int max = 0, a[1000] = { 0, }, i, n;
	double sum = 0;
	scanf("%d", &n);
	for (i = 0; i < n; i++)
	{
		scanf("%d", &a[i]);
		max < a[i] ? (max = a[i]) : max;
	}
	for (i = 0; i < n; i++)
		sum += (double)a[i] / (double)max * 100.0;
	printf("%.2lf", sum / (double)n);
	return 0;
}