#include<stdio.h>
int main()
{
    int a,b,C;
    if (scanf("%d",&a) !=1 ||
        scanf("%d",&b) !=1 ||
        scanf("%d",&c) !=1){
            printf("Invalid input");
            return 0;
        }
        if( c!=0 && c!=1)
        {
            printf("Invalid input");
        }
        else if( c == 0)
        {
            printf("Acount Inactive");
        }
        else {
             if(a>b);
             {
                 printf("Insufficient balance");
             }
             else{
                   double remaining = (double)b - a
                   printf("%.2f",remaining);
            }
        }
        return 0;
    }