View Code of Problem 72

#include <iostream>
#include<stdio.h>
#include<string.h>
#include<math.h>
#include<string>
#include<algorithm>
#include <iomanip>
using namespace std;
int main() {
	double m, n;
	
	cin >> m >> n;
	double sum = m;
	while (n>1) {
		
		m = m / 2;
		sum += 2*m;
		n--;
	}
	cout<<fixed<<setprecision(2) << m/2 <<" "<< sum;
}