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