#include<stdio.h>
int main()
{
    long paymentAmount,accountBalance;
    int isActive;
    if(scanf("%ld",&paymentAmount) !=1 ||
       scanf("%ld",&accountBalance) !=1 ||
       scanf("%d",&isActive) !=1)
       {
    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;
}