// editor2
#include<stdio.h>
int main ()
{
    int isActive;
    int paymentAmount,accountBalance;
    if (scanf("%d %d %d", &paymentAmount, &accountBalance, &isActive) !=3)
    {
        printf("Invalid input"\n);
        return 0;
    }
    if (isActive == 0)
    {
        printf("Account Inactive\n");
    }
     else if(paymentAmount > accountBalance)
     {
         printf("Insufficient Balance\n");
     }
     else
    {
        float remaining=(float)(accountBalance - paymentAmount);
        printf("%.2f\n", remaining);
    }
    return 0;
}