12 November 2025

• curprev 00:5600:56, 12 November 2025 Yanchudeng talk contribs m 3,341 bytes +14 →Solution 4 (Very Fast)
• curprev 00:5500:55, 12 November 2025 Yanchudeng talk contribs 3,327 bytes −15 →Solution 4 (Very Fast)
• curprev 00:5400:54, 12 November 2025 Yanchudeng talk contribs 3,342 bytes +41 →Solution 4 (Very Fast)

10 November 2025

• curprev 20:1820:18, 10 November 2025 Yanchudeng talk contribs m 3,301 bytes +2 →Solution 4 (Very Fast)
• curprev 20:1520:15, 10 November 2025 Yanchudeng talk contribs m 3,299 bytes +27 →Solution 4 (Very Fast)
• curprev 20:1320:13, 10 November 2025 Yanchudeng talk contribs 3,272 bytes +466 →Solution 3
• curprev 20:0620:06, 10 November 2025 Yanchudeng talk contribs m 2,806 bytes +11 →Solution 1
• curprev 20:0520:05, 10 November 2025 Yanchudeng talk contribs m 2,795 bytes +18 →Solution

22 October 2025

• curprev 14:2114:21, 22 October 2025 Bear10 talk contribs 2,777 bytes −179 →Solution 3
• curprev 14:1914:19, 22 October 2025 Bear10 talk contribs 2,956 bytes +607 No edit summary

4 October 2023

• curprev 21:5821:58, 4 October 2023 Rayford talk contribs 2,349 bytes +44 →Solution

7 June 2021

• curprev 12:1012:10, 7 June 2021 Mobius247 talk contribs 2,305 bytes 0 →Solution
• curprev 12:0912:09, 7 June 2021 Mobius247 talk contribs 2,305 bytes −2 →Solution
• curprev 12:0812:08, 7 June 2021 Mobius247 talk contribs 2,307 bytes −4 →Solution 2 (possibly slightly faster)
• curprev 12:0812:08, 7 June 2021 Mobius247 talk contribs 2,311 bytes 0 →Solution 2 (possibly slightly faster)
• curprev 12:0812:08, 7 June 2021 Mobius247 talk contribs 2,311 bytes +4 →Solution 2 (possibly slightly faster)
• curprev 12:0712:07, 7 June 2021 Mobius247 talk contribs 2,307 bytes +9 →Solution 2 (slightly faster)

25 December 2019

• curprev 11:5511:55, 25 December 2019 Dawae talk contribs 2,298 bytes +3 →Solution 2 (slightly faster)
• curprev 11:5511:55, 25 December 2019 Dawae talk contribs 2,295 bytes 0 →Solution 2 (slightly faster)
• curprev 11:5411:54, 25 December 2019 Dawae talk contribs 2,295 bytes +2 →Solution 2 (slightly faster)
• curprev 11:5411:54, 25 December 2019 Dawae talk contribs 2,293 bytes +869 →Solution

1 January 2019

• curprev 17:2717:27, 1 January 2019 Xxsilent-beastxx talk contribs m 1,424 bytes +4 →Solution

4 July 2013

• curprev 11:2711:27, 4 July 2013 Nathan wailes talk contribs 1,420 bytes +15 No edit summary

28 March 2011

• curprev 12:0312:03, 28 March 2011 Vborza talk contribs m 1,405 bytes 0 →Problem: typo, if --> is

29 March 2009

• curprev 05:4105:41, 29 March 2009 Misof talk contribs m 1,405 bytes +153 →Solution

25 January 2009

• curprev 14:5914:59, 25 January 2009 Misof talk contribs m 1,252 bytes +1 →Problem

27 August 2008

• curprev 13:3113:31, 27 August 2008 Abacadaea talk contribs 1,251 bytes +739 →Solution
• curprev 12:4212:42, 27 August 2008 Abacadaea talk contribs 512 bytes +401 →Problem

25 April 2008

• curprev 01:3801:38, 25 April 2008 I like pie talk contribs 111 bytes +111 New page: ==Problem== {{problem}} ==Solution== {{solution}} ==See also== {{AMC10 box|year=2008|ab=B|num-b=15|num-a=17}}