#include<stdio.h>
int main()
{
    int withdrawal,balance,status;
    scanf("%d%d%d",&withdrawal,&balance,&status);
    
    if(status == 0)
    {
        printf("Account Inactive\n");
    }
    else if(withdrawal > balance)
    {
        printf("Insufficient Balance\n")
    }
    else
    {
        printf("%.2f",(float)(balance -withdrawal));
    }
    return 0;
}