#include<stdio.h>
int main()
{
    int paymentAmount,acccoutBalance,isActive;
    float a;
    scanf("%d",&paymentamount);
    scanf("%d",&accoutBalance);
    scanf("%d",&isActive);
    if(paymentAmount<=1||paymentAmount>1000||accountBalance<=1||accountBalance>1000)
    {
        printf("Invalid input");
    }
    else if (accountBalance<paymentAmmount)
    {
    printf("Insufficient Balance");
    }
    else if(isActive==0)
    {
        printf("Account Inactive");
    }
    else
    {
        a=accountBalance-paymentAmount;
        printf("%.2f",a)
    }
    return 0;
    
}