Untitled

import java.util.Scanner;

public class test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = scanner.nextInt();

        int maxResult = Integer.MIN_VALUE;

        int hundreds = num / 100;
        int tens = (num / 10) % 10;
        int ones = num % 10;

        // Multiplying two digits and adding the third digit
        int tempResult = tens * ones + hundreds;
        if (tempResult > maxResult) {
            maxResult = tempResult;
        }

        // Adding two digits and multiplying the third digit
        tempResult = tens + ones * hundreds;
        if (tempResult > maxResult) {
            maxResult = tempResult;
        }

        // Multiplying all three digits
        tempResult = ones * tens * hundreds;
        if (tempResult > maxResult) {
            maxResult = tempResult;
        }

        // Adding all three digits
        tempResult = ones + tens + hundreds;
        if (tempResult > maxResult) {
            maxResult = tempResult;
        }

        System.out.println(maxResult);
    }
}