#include<stdio.h>
#include<ctype.h>
int main ()
{
    float paymentAmount,accountBalnce;
    int isActive;
    if(scanf("%f %f %d", &paymentAmount, &accountBalance, &isActive) !=3)
    {
        printf("Invalid input");
        return 0;
    }
    if(paymentAmount < 0 || accountBalance < 0 || (isActive != 0 && isActive !=1))
    {
    printf("Invalid input\n");
    return 0;
    } 
    if(isActive == 0)
    {
    printf("Account Inactive\n");
    return 0;
    }
    if(paymentAmount > accountBalance)
    
    printf("Insufficient Balance\n");
    return 0;
    }
    float remain = accountBalance  =  paymentAmount;
    printf("%.2f\n", remain);
    return 0;
    
    }