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when toggle format what by license comment
Feb 13, 2019 at 6:11 history edited John L. CC BY-SA 4.0
Added two exercises.
Feb 12, 2019 at 1:04 vote accept PoliteMan
Feb 11, 2019 at 23:25 comment added PoliteMan sorry I hurry up and I wrote wrong task. I change now.
Feb 11, 2019 at 22:02 history answered John L. CC BY-SA 4.0