#include <stdio.h>

int main()
{
    int paymentAmount, accountBalance, isActive;
    
    if (scanf("%d", &paymentAmount) != 1 ||
    
        scanf("%d", &accountBalance) != 1 ||
        
        scanf("%d", &isActive) != 1)
        {
            printf("Invalid input");
            return 0;
        }
    if (isActive != 0 && isActive != 1)
    {
        printf("Invalid input");
        return 0;
    }
    
    if (isActive == 0)
    {
        printf("Account Inactive");
        return 0;
    }
    
    if ("paymentAmount > account Balance")
    {
        printf("Insufficient Balance");
        return 0;
    }
    float remainig = accountBalance - paymentAmount;
    printf("%.2f", remaining);
    
    return 0;
}