View Code of Problem 72

#include "stdio.h"
#include "math.h"
#include "string.h"

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

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