05. Odd and Even Pairs

import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Scanner;

public class Main {
    public static void megaputs(Object obj) { System.out.println(obj); }
    public static void printf(String format, Object... args) { System.out.printf(format, args); }
    public static void javaprint(Object obj) { System.out.print(obj); }


    public static void main(String[] args) {
        Scanner stdin = new Scanner(System.in);
        String line = stdin.nextLine();
        String arr[] = line.split(" ");
        if(arr.length % 2 != 0) {
            megaputs("invalid length");
        }
        else {
            int nums[] = new int[arr.length];
            for (int i = 0; i < arr.length; i++) {
                nums[i] = Integer.parseInt(arr[i]);
            }
            int i = 0, j = i + 1;
            while(j < nums.length) {
                if(nums[i] % 2 == 0 ^ nums[j] % 2 == 0) {
                    printf("%d, %d -> different\n", nums[i], nums[j]);
                }
                else if(nums[i] % 2 == 0) {
                    printf("%d, %d -> both are even\n", nums[i], nums[j]);
                }
                else {
                    printf("%d, %d -> both are odd\n", nums[i], nums[j]);
                }
                i+=2;
                j+=2;
            }
        }
    }
}