#include <stdio.h>
int main()
{
    int paymentAmount,isActive,accountBalance;
     if (scanf("%d",&paymentAmount) |= 1||
    scanf("%d",&accountBalance) |= 1||
    scanf("%d",&isActive) |=1|
    {
        printf("Invalid input");
        return 0;
    }
    if(paymentAmount< 0 || paymentAmount > 1000000 || accountBalance < 0 || accountBalance)
    {
        printf("Invalid input");
        return 0;
    }
    if(isActive==0)
    {
        printf("Account Inactive");
    }
    else if(paymentAmount > accountBalance)
    {
        printf("Insufficient Balance");
    }
    else
    {
        float remainingBalance = accountBalance - paymentAmount;
        printf("%.2f",remainingBalance);
    }
    return 0;
}