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