#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 (paymentAmount < 0 || paymentAmount > 100000 || accountBalance < 0 || accountBalance > 1000000)
    {
        printf("Invalid input");
        return 0;
    }
    if (isActive == 0)
    {
        printf("Account Inactive");
    }
    else if (paymentAmount > accountBalance)
    {
        printf("insufficient Balance");
    }
    else
    {
        float remainigBalance = accountBalance - paymentAmount;
        printf("%.2f",remainingBalance);
    }
    return 0;
}