61 Strategy = a way to a victory

by Arsen Shnurkov

67 Reverse . Phase rupture

by mossad_re

68 Material for learning

by BadCats

70 "Grid" = DAG?

by Arsen Shnurkov

73 To group indexes

by SergASh

77 List grouping

by okon

83 Detection

by Chorkov

87 Mean value on a ring

by RedApe

90 Pack of strategy

by Hard_Club