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