#include<stdio.h>
int main()
{
    int pay,acc,act;
    if(scanf("%d %d %d",%pay,&acc,&act)!=3)
    {
        printf("Invalid input");
        return 1;
    }
    if(act==0)
    {
        printf("Account Inactive\n");
        return 0;
    }
    if(pay>acc)
    {
        printf("Insufficient Balance\n");
        return 0;
    }
    double rem=(double)acc-pay;
    printf("%2f",rem);
}