#include<stdio.h>
int main()
{
    long paymentAmount,accountBalance;
    int isActive;
    if(scanf("%1d %1d %d",&paymentAmount,&accountBalance,&isActive) !=3)
    {printf("Invalid input");
    return 0;
}
if(paymentAmount<0 || paymentAmount >1000000 ||
accountBalance <0 || accountBalance >1000000 ||(isactive !=0 && isactive != 1))
{
    printf("Invalid input");
    return 0;
}
if (isactive ==0)
{
    printf("Account Inacctive");
    return 0;
}
if (paymentAmount >accountBalance)
{
    printf("Insufficient Balance");
    return 0;
}
double remaininng = accountBalance-paymentAmount;
printf("%.2f",remaining);
return 0;
}