View Code of Problem 3886

#include<stdio.h>//数学推导 
int main()
{
	int k;
	double p, res1, res2;
	scanf("%d%lf", &k, &p);
	res1 = k / p;
	res2 = k*(k + 1) / (p*p) - res1;
	printf("%.3f %.3f\n", res1, res2);
}