View Code of Problem 72

#include <stdio.h>
#include <iostream>
#include <string.h>
#include <string>
#include <algorithm>
#include <iomanip>
#include<vector>
#include<math.h>
using namespace std;
int main()
{
	double n, m;
	cin >> n >> m;
	double sum = 0;
	while (m--) {
		sum += n;
		n = n / 2;
		sum += n ;
	}
	sum = sum - n;
	cout<<fixed<<setprecision(2) << n << " " << sum;
}