#include<stdio.h>
#include<ctype.h>
int main()
{
	int a,b,c;
	float r=0;
	scanf("%d%d%d",&a,&b,&c);
	if (c==0)
	{
		printf("Account Inactive");
	}
	else 
	{
	if(isdigit(a)&& isdigit(b))
	{
	 	r=b-a;
		printf("%.2f",r);   
	}
	else if (a<0 || b<0 || a>=100000||b>=100000)
	{
		printf("Invalid input");
	}
	else (a>b)
	{
		printf("Insufficient Balance");
	}
	
	}
}
	return 0;
}