#include<stdio.h>
int main()
{
    int paymentAmount,accountBalance,isActive;
    float remainingBalance;
    scanf("%d",&paymentAmount);;
    scanf("%d",&accountBalance);
    scanf("%d",&isActive);
    if(isActive==0)
    {
        printf("account InActive");
    }
    else if(isActive==1)
    {
        if(accountBalance<paymentAmount)
        {
            printf("Insufficient Balance");
        }
        else
        {
            remainingBalance=accountBalance-paymentAmmount;
            printf("%.2f",remainingBalance);
        }
    }
    return 0;
}