4 Swap

by Titus

6 volatile-only lock

by nikholas

12 Output path

by Maxim Rogozhin

13 Rational numbers

by nikov ( Pages 1 2 )

14 Superfluous equalities

by Corkcrew

18 Google Code Jam 2017

by NotImplemented

19 Search of loops in dependences

by SergeyOsipov

21 How to find all?

by olimp_20

22 Average load

by nikholas

23 Reproduction of bacteria

by nikholas

24 To sort the big file

by makdak