13 October 2025

• curprev 21:3321:33, 13 October 2025 Ying821 talk contribs m 7,796 bytes +13 →Solution 2(completely useless unless you have 75 minutes for this problem only

1 August 2025

• curprev 05:1805:18, 1 August 2025 Akrockit talk contribs 7,783 bytes +32 →Solution 3
• curprev 05:1805:18, 1 August 2025 Akrockit talk contribs 7,751 bytes +57 →Solution 2
• curprev 05:1705:17, 1 August 2025 Akrockit talk contribs 7,694 bytes +132 →Solution 2(Useless unless you have 75 minutes for this problem only)
• curprev 05:1605:16, 1 August 2025 Akrockit talk contribs 7,562 bytes −24 →Solution 4(Looks long but easiest solution)
• curprev 05:1505:15, 1 August 2025 Akrockit talk contribs 7,586 bytes −192 →Solution 4(Looks long but easiest solution)
• curprev 05:1405:14, 1 August 2025 Akrockit talk contribs 7,778 bytes +10 →Solution 4
• curprev 05:1405:14, 1 August 2025 Akrockit talk contribs 7,768 bytes +15 →Solution 4
• curprev 05:1305:13, 1 August 2025 Akrockit talk contribs 7,753 bytes −43 →Solution 4

2 July 2025

• curprev 01:2301:23, 2 July 2025 Sevenoptimus talk contribs m 7,796 bytes −6 Fixed typos in problem statement

4 February 2025

• curprev 09:5309:53, 4 February 2025 Savannahsolver talk contribs 7,802 bytes −68 →Video Solution 2

23 October 2024

• curprev 21:5621:56, 23 October 2024 London system talk contribs 7,870 bytes −67 →Note: Video Solution

13 October 2024

• curprev 15:1815:18, 13 October 2024 Expertm talk contribs 7,937 bytes −1 →Note (video solution)
• curprev 15:1715:17, 13 October 2024 Expertm talk contribs m 7,938 bytes +68 →Video Solution

6 September 2024

• curprev 14:1814:18, 6 September 2024 Neeyakkid23 talk contribs 7,870 bytes 0 →Solution 4

5 September 2024

• curprev 19:2819:28, 5 September 2024 Neeyakkid23 talk contribs m 7,870 bytes −8 →Solution 4: more clarity
• curprev 19:2719:27, 5 September 2024 Neeyakkid23 talk contribs m 7,878 bytes −1 →Solution 4: minor edit to add clarity
• curprev 19:1319:13, 5 September 2024 Neeyakkid23 talk contribs m 7,879 bytes +17 →Solution 4: grammatical error fixed
• curprev 19:1219:12, 5 September 2024 Neeyakkid23 talk contribs 7,862 bytes +1,840 New solution added

9 July 2024

• curprev 00:3700:37, 9 July 2024 Oinava talk contribs m 6,022 bytes +1 →Solution 2
• curprev 00:3600:36, 9 July 2024 Oinava talk contribs m 6,021 bytes +1 →Solution 2
• curprev 00:1600:16, 9 July 2024 Oinava talk contribs m 6,020 bytes −2 →Solution 2
• curprev 00:1500:15, 9 July 2024 Oinava talk contribs m 6,022 bytes +12 →Solution 2
• curprev 00:0800:08, 9 July 2024 Oinava talk contribs m 6,010 bytes +224 →Solution 2

8 July 2024

• curprev 23:5923:59, 8 July 2024 Oinava talk contribs m 5,786 bytes −25 →Video Solution

4 April 2024

• curprev 12:5212:52, 4 April 2024 Cxsmi talk contribs m 5,811 bytes +60 →Solution 3

29 March 2024

• curprev 18:1918:19, 29 March 2024 Cxsmi talk contribs m 5,751 bytes +9 →Solution 3
• curprev 18:1818:18, 29 March 2024 Cxsmi talk contribs 5,742 bytes +1,654 No edit summary

28 July 2023

• curprev 17:2417:24, 28 July 2023 Daremo talk contribs m 4,088 bytes +1 No edit summary

17 March 2023

• curprev 07:2207:22, 17 March 2023 Savannahsolver talk contribs 4,087 bytes +68 No edit summary

14 December 2021

• curprev 12:3612:36, 14 December 2021 Dairyqueenxd talk contribs 4,019 bytes −3 →Solution 2
• curprev 12:3412:34, 14 December 2021 Dairyqueenxd talk contribs 4,022 bytes +82 →Note: Solution 1
• curprev 12:3212:32, 14 December 2021 Dairyqueenxd talk contribs 3,940 bytes −6 →Solution 1
• curprev 12:3112:31, 14 December 2021 Dairyqueenxd talk contribs 3,946 bytes +124 →Solution 1
• curprev 12:2812:28, 14 December 2021 Dairyqueenxd talk contribs 3,822 bytes −10 →Problem

3 September 2021

• curprev 10:4110:41, 3 September 2021 Apsid talk contribs m 3,832 bytes +1 →Note: Solution 1
• curprev 10:4110:41, 3 September 2021 Apsid talk contribs 3,831 bytes +598 A note about a quicker solution using similar methods to Solution 1

31 May 2021

• curprev 11:2811:28, 31 May 2021 Mobius247 talk contribs 3,233 bytes +67 →Solution 1
• curprev 11:1211:12, 31 May 2021 Mobius247 talk contribs m 3,166 bytes +1 →Solution 2
• curprev 11:1111:11, 31 May 2021 Mobius247 talk contribs 3,165 bytes +21 →Solution 1
• curprev 11:1011:10, 31 May 2021 Mobius247 talk contribs 3,144 bytes −5 →Solution 1

30 October 2020

• curprev 20:1020:10, 30 October 2020 Thestudyofeverything talk contribs 3,149 bytes +19 →Solution 1
• curprev 19:5219:52, 30 October 2020 Thestudyofeverything talk contribs 3,130 bytes +55 →Solution 1

22 October 2020

• curprev 12:0912:09, 22 October 2020 Lnzhonglp talk contribs 3,075 bytes −15 →Solution 1

7 October 2020

• curprev 20:0120:01, 7 October 2020 Rudolf1279 talk contribs 3,090 bytes +1,016 No edit summary

26 November 2015

• curprev 12:0112:01, 26 November 2015 Mzhang talk contribs 2,074 bytes −88 →See Also

13 September 2015

• curprev 22:5822:58, 13 September 2015 Ft029 talk contribs m 2,162 bytes 0 →Problem

4 July 2013

• curprev 10:3010:30, 4 July 2013 Nathan wailes talk contribs 2,162 bytes +15 No edit summary

11 August 2006

• curprev 08:4408:44, 11 August 2006 JBL talk contribs m 2,147 bytes +1 No edit summary

4 August 2006

• curprev 17:1517:15, 4 August 2006 JBL talk contribs 2,146 bytes +100 No edit summary