#include<stdio.h>
int main()
{
    int paymentAmount, accountBalance, isActive;
    scanf("%d", &paymentAmount);
    scanf("%d", &accountBalance);
    scanf("%d", &isActive);
    if (isActive == 0)
    {
        printf("Inactive Amount");
    }
    else if (payment > accountBalance)
    {
        printf("Insufficient Balance");
    }
    else{
        float remaining = accountBalance - paymentAmount;
        printf("%.2f", remaining);
    }
    return 0;
    
}