#include <stdio.h>

int main()
{
    double pamt, balance;
    int active;
    
    if (scanf("%lf",&pamt) != 1||
        scanf("%lf", &balance) != 1||
        scanf("%d",&active;)!=1)
        
        
    {
        printf("Invalid input\n");
        return 0;
    }
    if (pamt < 0 || balance <0|| active <0 || active > 1)
    {
        printf("Invalid input\n");
        return 0;
        
    }
    if (active == 0)
    {
        printf("Account inactive\n");
        return 0;
    }
    if (balance < pamt)
    {
        printf("Insufficient Balance\n");
       return 0;
    }
    double new_balance = (double)balance - p_amt;
    printf ("%.2f",rema

    return 0;
    }