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