#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 ||accountBalance >1000000 || 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);
    }
return 0;
}