Look for inactive players

An inactive player is a player who has played less than 1 game in 1 month for a given date.

player_id: 1622, player_name: 'John', games_played: 0
player_id: 9864, player_name: 'Mary', games_played: 84
...

A small extra challenge

How did you solve this problem? Did you loop over the events more then once? If you did, also try to solve the problem by only looping over the events one time. If you're up to it, try to do this for the next challenges also.

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