View Code of Problem 72

#include <stdio.h>


int main(){
	
	double m;
	int n;
	
	scanf("%lf %d",&m,&n);
	
	double sum =0;
	
	int i;
	double h;
	
	for(i=1;i<=n;i++){
		h=m;
		m/=2;
		if(i==1){
			sum = sum +h;	//	
		}else{
			sum = sum+h*2;	//	
		}
		
	}
	
	printf("%.2lf %.2lf",m,sum);
	
	return 0;
}