#include<stdio.h>
int main(){
    int withdrawal_amount;
    int current_balance;
    int account_status;
    
    scanf("%d", &withdrawal_amount);
    scanf("%d", &current_balance);
    scanf("%d", &account_status);
    
    if (account_status == 0){
        printf("Account Inactive\n");
    } else {
        if (current_balance < withdrawl_amount) {
            printf("Insufficient Balance\n");
        } else {
            double update_balance = (double)current_balance - withdrawl_amount;
            printf("%.2f\n", updated_balance);
        }
    }
    return 0;
}