#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 (paymentAmount < 0 || paymentAmount > 1000000 || accountBalance ||
  {
     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;
}