22 November 2023

• curprev 12:4912:49, 22 November 2023 Eevee9406 talk contribs m 3,638 bytes +16 No edit summary

6 September 2023

• curprev 17:4017:40, 6 September 2023 Integralarefun talk contribs m 3,622 bytes −15 →Problem 6: use better italic

3 August 2016

• curprev 07:4607:46, 3 August 2016 Profesor talk contribs 3,637 bytes +1 →Problem 1

27 April 2016

• curprev 18:5118:51, 27 April 2016 Sujaykazi talk contribs 3,636 bytes +37 →Problem 5
• curprev 18:5018:50, 27 April 2016 Sujaykazi talk contribs 3,599 bytes +43 →Problem 3
• curprev 13:3013:30, 27 April 2016 Dli00105 talk contribs 3,556 bytes +173 add solution links
• curprev 00:0900:09, 27 April 2016 Sujaykazi talk contribs 3,383 bytes +981 →Problem 6
• curprev 00:0200:02, 27 April 2016 Sujaykazi talk contribs 2,402 bytes −11 →Problem 5
• curprev 00:0100:01, 27 April 2016 Sujaykazi talk contribs 2,413 bytes −11 →Problem 2
• curprev 00:0100:01, 27 April 2016 Sujaykazi talk contribs 2,424 bytes −11 →Problem 3
• curprev 00:0100:01, 27 April 2016 Sujaykazi talk contribs 2,435 bytes +1 →Problem 4
• curprev 00:0000:00, 27 April 2016 Sujaykazi talk contribs 2,434 bytes +568 →Problem 5

26 April 2016

• curprev 23:5723:57, 26 April 2016 Sujaykazi talk contribs 1,866 bytes +731 →Problem 3
• curprev 23:4823:48, 26 April 2016 Sujaykazi talk contribs 1,135 bytes −3 →Problem 2
• curprev 23:4523:45, 26 April 2016 Sujaykazi talk contribs 1,138 bytes +154 →Problem 2
• curprev 10:2010:20, 26 April 2016 Rrusczyk talk contribs 984 bytes +89 No edit summary

25 April 2016

• curprev 20:5720:57, 25 April 2016 Dli00105 talk contribs 895 bytes +895 Created page with "==Day 1== ===Problem 1=== Let <math>X_1, X_2, \ldots, X_{100}</math> be a sequence of mutually distinct nonempty subsets of a set <math>S</math>. Any two sets <math>X_i</math>..."