View Code of Problem 72

#include <cstdio>
#include <iostream>
using namespace std;

int main(){
	double m,sum=0;
	int n;
	cin>>m>>n;
	for(int i=1;i<=n;i++){
		if(i==n)
			sum+=m;
		else
			sum+=m+m/2;
		m/=2;
	}
	printf("%.2f %.2f",m,sum);
	return 0;
}