#include <stdio.h>
int main()
{
    int paymentAmount,accountBalance,
    int isActive;
    float remainingBalance;
scanf("%d",&paymentAmount);
scanf("%d",&accountBalance);
scanf("%d",&isActive);

    if(paymentAmount<=1|| paymentAmount>1000000 || accountBalance<=1 || isActive<0 ||isActive >1)
    {
        printf("Invalid input");
    }
    else if (paymentAmount > accountBalance){
        printf("Insufficient Balance");
    }
    else if(isActive == 0){
       printf("Account Inactive");
    }
    else{
     remainingBalance = accountBalance-paymentAmount;
    printf("%.2f",remainingBalance);
    }
}