Python3 代码

n = int(input())

for i in range (n):
    m = input().split()

    s = int(m[0])
    e = int(m[1])
    if s > e:
        s,e = e,s

    t = 0
    for j in range (s+1, e):
        if j % 2:
            t += j
    print (t)