Python3 代码

while True:
    n = input().split()

    x = int(n[0])
    y = int(n[1])

    if x <= 0 or y <= 0:
        break

    if x > y:
        x, y = y, x

    sum = 0 
    for i in range (x, y + 1):
        sum += i
        print (i, end=" ")
    print ("Sum=" + str(sum))