View Code of Problem 72

#include <stdio.h>
int main(){
	int N,i;
	float M;
	scanf("%f %d",&M,&N);
	float a[N+1],sum=0;
	a[0]=M;
	for(i=1;i<N+1;i++){
		a[i]=a[i-1]/2;
	}
	printf("%.2f ",a[N]);
	sum=a[0];
	for(i=2;i<=N;i++){
		sum+=2*a[i-1];
	}
	printf("%.2f",sum);
}