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