userScore = int(input("Enter your score: "))

highscoresFile = open("highscores.txt", "r")
line1 = highscoresFile.readline()
line2 = highscoresFile.readline()
line3 = highscoresFile.readline()
highscoresFile.close()

index = line1.find(":")
score1 = int(line1[index+2:])
print(score1)

index = line2.find(":")
score2 = int(line2[index+2:])
print(score2)

index = line3.find(":")
score3 = int(line3[index+2:])
print(score3)

if userScore > score1:
  print("You are in first place.")
  name = input("Enter your name: ")
  highscoresFile = open("highscores.txt", "w")
  highscoresFile.write("{}: {}\n".format(name, userScore))
  highscoresFile.write(line1)
  highscoresFile.write(line2)
  highscoresFile.close()
elif userScore > score2:
  print("You are in second place.")
  name = input("Enter your name: ")
  highscoresFile = open("highscores.txt", "w")
  highscoresFile.write(line1)
  highscoresFile.write("{}: {}\n".format(name, userScore))
  highscoresFile.write(line2)
  highscoresFile.close()
elif userScore > score3:
  print("You are in third place.")
  name = input("Enter your name: ")
  highscoresFile = open("highscores.txt", "w")
  highscoresFile.write(line1)
  highscoresFile.write(line2)
  highscoresFile.write("{}: {}\n".format(name, userScore))
  highscoresFile.close()
else:
  print("You are not on the leaderboard.")