#include<stdio.h>
void main()
{
    long long pa,ab;
    int ia;
    if(scanf("%lld",&pa) !=1 || scanf("%lld",&ab) != 1 || scanf("%d",&ia) !=1)
    {
        printf("Invalid input");
        
    }
    if(pa<0 || ab<0 || pa>1000000 || ab>1000000 || !(ia==0||ia==1))
    { 
        printf("Invalid input");
    }
    if(ia==0)
    {
        printf("Account Inactive");
    }
    if(pa>ab)
    {
        printf("Insufficient Balance");
    }
    double reamaining = ab - pa;
    printf("%.2f",remaining);
    
}