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