import random
import linecache

def topics():

  category = random.randrange(1, 5, 1)
  #print(category)

  if category == 1:

    #topic_file = open("topics1.txt")

    topic1 = random.randrange(1, 23, 1)
    #return topic1
    print(linecache.getline("topics1.txt", topic1))

    topic2 = random.randrange(1, 18, 1)

    if topic2 == topic1:
        topic2 = random.randrange(1, 18, 1)

    if topic2 != topic1:
        #return topic2
        print(linecache.getline("topics1.txt", topic2))

  if category == 2:

    #topic_file = open("topics2.txt")

    topic1 = random.randrange(1, 19, 1)
    #return topic1
    print(linecache.getline("topics2.txt", topic1))

    topic2 = random.randrange(1, 18, 1)

    if topic2 == topic1:
        topic2 = random.randrange(1, 18, 1)

    if topic2 != topic1:
        #return topic2
        print(linecache.getline("topics2.txt", topic2))

  if category == 3:

    #topic_file = open("topics3.txt")

    topic1 = random.randrange(1, 22, 1)
    #return topic1
    print(linecache.getline("topics3.txt", topic1))

    topic2 = random.randrange(1, 18, 1)

    if topic2 == topic1:
        topic2 = random.randrange(1, 18, 1)

    if topic2 != topic1:
        #return topic2
        print(linecache.getline("topics3.txt", topic2))

  if category == 4:

    #topic_file = open("topics4.txt")

    topic1 = random.randrange(1, 18, 1)
    #return topic1
    print(linecache.getline("topics4.txt", topic1))

    topic2 = random.randrange(1, 18, 1)

    if topic2 == topic1:
        topic2 = random.randrange(1, 18, 1)

    if topic2 != topic1:
        #return topic2
        print(linecache.getline("topics4.txt", topic2))

  if category == 5:

    #topic_file = open("topics5.txt")

    topic1 = random.randrange(1, 18, 1)
    #return topic1
    print(linecache.getline("topics5.txt", topic1))

    topic2 = random.randrange(1, 18, 1)

    if topic2 == topic1:
        topic2 = random.randrange(1, 18, 1)

    if topic2 != topic1:
        #return topic2
        print(linecache.getline("topics5.txt", topic2))

topics()