king.cpp

pku 3682 King Arthur s Birthday Celebration

#include<iostream>
#include<cmath>
using namespace std;
int main(){
	double k,p;
	while(scanf("%lf",&k)!=EOF){
		if(k==0){break;}
		scanf("%lf",&p);
		double d,cost;
		d=k/p;
		cost=(k*p*k+(1+k)*k-p*(1+k)*k)/p/p;
		int i;
		printf("%0.3lf %0.3lf\n",d,cost);
	}
	return 0;
}