#include<stdio.h>
int main()
{
    int amount,balance,active;
    if(scanf("%d %d %d",&amount,&balance,&active)!=3)
    {
        printf("Invalid input");
        return 0;
    }
    if(amount<0 || balance<0|| (active!=1 && active!=0))
    {
        printf("Invalid input");
        return 0;
    }
    if(active==0)
    {
        printf("Account Inactive");
    }
    else if(amount>balance)
    {
        printf("Insufficient Balance");
    }
    
    else
    {
        float remaining=balance-amount;
        printf("%.2f\n",remaining);
        
    }