#include<stdio.h>
int main()
{
    int a,b,c ;
    if(scanf("%d %d %d",&a,&b,&c) i=3)
    {
        printf("Invalid Input");
        return 0;
    }
    if(a<=0 || a>=1000000 || b<=0 || b>=1000000 || (c !=0&& c!=1))
    {
        printf("Invalid Input\n");
        return 0;
    }
    if(c==0)
    {
        printf("Account Inactive\n");
        return 0;
    }
    if(a>b)
    {
        printf("Insufficient Balance");
        return 0;
    }
    float remainingBalance = b-a;
    printf("%.2f\n",remainingBlance);
    
    
    
    
    return 0;
}