#include<stdio.h>
int main()
{
    int paymentAmount,accountAmount;
    int isActive;
    float remainingBalance;
    scanf("%d",&paymentAmount);
     scanf("%d",&accountAmount);
      scanf("%d",&isActive);
    
    if(paymentAmount<=1|| paymentAmount> 1000000 || accountBalance <=1 || accountBalance >1000000 || isActive <0 || isActive >1)
   { 
         printf("Invalid input");
        
        
   }
    else if(isActive==0)
     {
    printf("Account Inactive");
        
    }
    else if(paymentAmount < accountBalance)
    {
     printf("Insufficient Balance");
    }
    else
    {
         remainingBalance = accountBalance - paymentAmount;
        printf("%.2f",remainingBalance);
    }
    return 0;
}