#include<stdio.h>
int main()
{
    int p,b,a;
    if(scanf("%d%d%d",$p,&b,&a) !=3)
    printf("Invalid Input");
    else if(!a)
    printf("Account Inactive");
    else if(p>b)
    printf("Insufficient Balance");
    else
    printf("%.2f",(float)(b-p));
    return 0;
    
}