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

}