#include<stdio.h>
void main()
{
    int paymentamount , accountbalance, isactive;
    float answer;
    
    scanf("%d",&paymentamount);
    scanf("%d",&accountbalance);
    scanf("%d",&isactive);
if(paymentamount<0 ||accountbalance<0 ||(isactive !=0 && isactive !=1))
{
    printf("Invalid Input");
}
else if(isactive ==0)
{
    printf("Account Inactive");
}
else if(accountbalance<paymentmount)
{
 printf("Insufficient Balance");
}
else
{
    answer=accountbalance-paymentamount;
    printf("%.2f",answer);
}