28 July 2025

• curprev 22:3022:30, 28 July 2025 Aarushghadia talk contribs m 12,910 bytes 0 →Problem 7

16 December 2024

• curprev 17:2917:29, 16 December 2024 Disha gupta talk contribs 12,910 bytes −5 →Problem 1

12 December 2024

• curprev 20:5020:50, 12 December 2024 Nathanbikeski talk contribs m 12,915 bytes +5 →Problem 1

28 September 2024

• curprev 14:3714:37, 28 September 2024 Karj17 talk contribs 12,910 bytes −2 →Problem 5
• curprev 14:3714:37, 28 September 2024 Karj17 talk contribs 12,912 bytes +2 →Problem 5

3 August 2024

• curprev 14:4214:42, 3 August 2024 Mzhang0 talk contribs m 12,910 bytes +76 Undo revision 224354 by Abd 09rahman27 (talk) (this breaks problem 18) Tag: Undo
• curprev 05:5705:57, 3 August 2024 Abd 09rahman27 talk contribs 12,834 bytes −76 →Problem 18

5 March 2023

• curprev 10:2010:20, 5 March 2023 Sushi111 talk contribs m 12,910 bytes +5 No edit summary
• curprev 10:1710:17, 5 March 2023 Sushi111 talk contribs m 12,905 bytes −9 →Problem 6: Edited formatting to make the problem more understandable

3 March 2022

• curprev 17:3717:37, 3 March 2022 Pog talk contribs 12,914 bytes −1 No edit summary

19 February 2020

• curprev 11:5511:55, 19 February 2020 Made in 2016 talk contribs m 12,915 bytes +34 No edit summary

20 December 2019

• curprev 08:5508:55, 20 December 2019 Zion121 talk contribs m 12,881 bytes +1 →Problem 1

29 June 2017

• curprev 15:1315:13, 29 June 2017 Highjump35 talk contribs m 12,880 bytes 0 →Problem 11

15 January 2017

• curprev 21:2021:20, 15 January 2017 Brianlam talk contribs m 12,880 bytes 0 →Problem 11: FIXED REDUNDANT ANSWER CHOICES B AND C
• curprev 20:0020:00, 15 January 2017 Dvilla721 talk contribs 12,880 bytes 0 →Problem 11

24 December 2016

• curprev 20:1220:12, 24 December 2016 Mrmxs talk contribs m 12,880 bytes +22 →Problem 13

9 October 2016

• curprev 16:3716:37, 9 October 2016 Arowaaron talk contribs 12,858 bytes +46 →Problem 2
• curprev 16:3516:35, 9 October 2016 Arowaaron talk contribs 12,812 bytes +21 →Problem 4
• curprev 16:3416:34, 9 October 2016 Arowaaron talk contribs 12,791 bytes −1 →Problem 4
• curprev 16:3416:34, 9 October 2016 Arowaaron talk contribs 12,792 bytes +57 →Problem 3
• curprev 16:3316:33, 9 October 2016 Arowaaron talk contribs 12,735 bytes −1 →Problem 3
• curprev 16:3116:31, 9 October 2016 Arowaaron talk contribs 12,736 bytes −49 →Problem 2
• curprev 16:2916:29, 9 October 2016 Arowaaron talk contribs 12,785 bytes +166 →Problem 2
• curprev 16:2416:24, 9 October 2016 Arowaaron talk contribs 12,619 bytes 0 →Problem 1
• curprev 16:2316:23, 9 October 2016 Arowaaron talk contribs 12,619 bytes −87 →Problem 1
• curprev 15:3715:37, 9 October 2016 Arowaaron talk contribs 12,706 bytes −1 →Problem 11
• curprev 15:3715:37, 9 October 2016 Arowaaron talk contribs 12,707 bytes −19 →Problem 4
• curprev 15:3615:36, 9 October 2016 Arowaaron talk contribs 12,726 bytes −56 →Problem 3
• curprev 15:3415:34, 9 October 2016 Arowaaron talk contribs 12,782 bytes −163 →Problem 2
• curprev 15:3215:32, 9 October 2016 Arowaaron talk contribs 12,945 bytes +9 →Problem 1
• curprev 15:3015:30, 9 October 2016 Arowaaron talk contribs 12,936 bytes +78 →Problem 1

26 April 2016

• curprev 17:0117:01, 26 April 2016 Plasmaboy2 talk contribs 12,858 bytes −83 →Problem 13
• curprev 17:0017:00, 26 April 2016 Plasmaboy2 talk contribs 12,941 bytes +83 →Problem 13

4 November 2015

• curprev 14:2814:28, 4 November 2015 Kaysi talk contribs m 12,858 bytes −1 →Problem 6

2 November 2015

• curprev 15:4415:44, 2 November 2015 Drkotlovmath talk contribs m 12,859 bytes +2 →Problem 13

1 November 2015

• curprev 20:0720:07, 1 November 2015 Imo dreams talk contribs 12,857 bytes −2 →Problem 16
• curprev 20:0720:07, 1 November 2015 Imo dreams talk contribs m 12,859 bytes +3 →Problem 16

13 March 2015

• curprev 19:5619:56, 13 March 2015 Mathgeek2006 talk contribs m 12,856 bytes +215 No edit summary

27 December 2014

• curprev 20:5120:51, 27 December 2014 Jhoer talk contribs 12,641 bytes 0 →Problem 14

27 November 2014

• curprev 10:4010:40, 27 November 2014 Unknown123 talk contribs 12,641 bytes 0 →Problem 14

3 February 2014

• curprev 11:3911:39, 3 February 2014 Vmevol talk contribs m 12,641 bytes 0 →Problem 21

4 July 2013

• curprev 10:5710:57, 4 July 2013 Nathan wailes talk contribs 12,641 bytes +15 No edit summary

21 February 2012

• curprev 17:2917:29, 21 February 2012 Levans talk contribs 12,626 bytes −5 No edit summary

5 February 2011

• curprev 12:0412:04, 5 February 2011 Frtian talk contribs 12,631 bytes +1 →Problem 7

20 December 2010

• curprev 15:2615:26, 20 December 2010 T90bag talk contribs 12,630 bytes +46 →Problem 1
• curprev 15:2515:25, 20 December 2010 T90bag talk contribs 12,584 bytes −324 →Solution
• curprev 15:2315:23, 20 December 2010 T90bag talk contribs 12,908 bytes +278 →Problem 1

11 October 2010

• curprev 19:5919:59, 11 October 2010 Sendhil talk contribs m 12,630 bytes 0 Corrected typo

2 April 2010

• curprev 13:5913:59, 2 April 2010 Moplam talk contribs m 12,630 bytes −6 →Problem 21
• curprev 13:5213:52, 2 April 2010 Moplam talk contribs m 12,636 bytes +6 →Problem 13