#include<stdio.h>
#include<math.h>

int main()
{   
	float money,year,rate,interest;
	printf("Enter money,year and rate: \n");
	scanf("%f %f %f",&money,&year,&rate);
	interest = money * pow((1 + rate), year) - money;
	printf("interest=%.2f",interest);
    return 0;
}