Java 代码

import java.util.Scanner;

public class Main
{
    public static void main(String[] args)
    {
        Scanner cin = new Scanner(System.in);

        int n = cin.nextInt();

        int s = 0;
        int e = 0;

        int t = 0;
        for (int i = 0; i < n; i ++)
        {
            s = cin.nextInt();
            e = cin.nextInt();

            if (s > e)
            {
                int temp = s;
                s = e;
                e = temp;
            }

            t = 0;
            for (int j = s + 1; j < e; j ++)
            {
                if (j % 2 != 0)
                    t += j;
            }
            System.out.println (t);
        }
    }
}