import random

ft = open("teachers.txt", "r")
fsp = open("speciality.txt", "r")
fst = open("students.txt", "r")
fsubj = open("subjects.txt", "r")
fout = open("output.txt", "w")

sp = [str.strip(" \n") for str in fsp]

fout.write("prepodi:\n")
for str in ft:
  fout.write(str.strip(" \n") + " " + random.choice(sp) + "\n")

fout.write("\nstudenti:\n")
for str in fst:
  fout.write(str.strip(" \n") + "\n")

fout.write("\npredmeti:\n")
for str in fsubj:
  fout.write(str[3:].strip(" \n") + "\n")