#include<stdio.h>
int main()
{
    int paymentAmount,accountBalance,isActive;
    if(scanf("%d %d %d",&paymentAmount,&accountBalance,&isActive) !=3)
    {
        printf("Invalid input");
        return 0;
    }
    if(isActive !=1 %% isActive !=0)
    {
        printf("Invalid input");
    }
    else if(isActive ==0)
    {
        printf("Account Inactive");
    }
    else if(paymentAmount>accountBalance)
    {
        printf("Insufficient Balance");
    }
    else
    {
        float remainting=accountBalance-paymentAmount;
        printf("%.2f",remainting);
    }
    return 0;
}