314. Game Play Analysis IV

Let's analyze the activity for each player:

• Player 1:
  • First login date: 2016-03-01
  • Day after first login: 2016-03-02
  • There is an activity record for Player 1 on 2016-03-02. So, Player 1 is counted.
• Player 2:
  • First login date: 2017-06-25
  • Day after first login: 2017-06-26
  • There is NO activity record for Player 2 on 2017-06-26. So, Player 2 is NOT counted.
• Player 3:
  • First login date: 2016-03-02
  • Day after first login: 2016-03-03
  • There is an activity record for Player 3 on 2016-03-03. So, Player 3 is counted.

Total unique players = 3 (Players 1, 2, 3).

Players who logged in the day after their first login = 2 (Players 1, 3).

Fraction = 2 / 3 = 0.6666... rounded to 2 decimal places is 0.67.