#include<stdio.h>
int main()
{
    int paymentAmount,accountBalance,isActive;
    float remainingbalance;
    scanf("%d", &paymentAmount);
    scanf("%d", &accountBalance);
    scanf("%d", &isActive);
    if(isActive==0)
    {
        printf("Account Inactive");
    }
    else if(isActive==1)
    {
         if(accountBalance<paymentAmount)
        {
            printf("Insufficient Balance");
        }
        else
        {
            remainingbalance=accountBalance-paymentAmount;
            printf("%.2f",remainingbalance);
        }
    }
}
return 0;