Problem A
Polish Notation — Problem Statistics

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Submissions	3428
Accepted submissions	774
Submission ratio	22.58%
Authors	674
Full solves [?]	524
Full solve Ratio	77.74%

#	User	Runtime	Language	Date
1	Jeroen Bransen	0.00 s	C	2013-07-02 10:17:56
2	Seth Carter	0.00 s	C	2017-11-20 12:36:51
3	Bergur Snorrason	0.00 s	C	2018-11-20 19:26:11
4	Oskar Liew	0.00 s	C	2020-06-05 13:36:02

#	User	Runtime	Language	Date
1	Johan Pettersson	0.02 s	C#	2018-04-24 22:35:53
2	Henrik Ledin	0.02 s	C#	2018-09-11 09:22:36
3	Javad Ghamari	0.03 s	C#	2019-08-10 17:11:44
4	Mohamed Samir	0.03 s	C#	2019-10-10 14:04:50
5	asmat khan	0.03 s	C#	2020-02-21 00:14:16
6	Mahdi Rouzbahaneh	0.03 s	C#	2020-03-13 15:05:55
7	Davi Ajmaya	0.03 s	C#	2020-04-18 22:19:37

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-08-03 04:35:51

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.10 s	F#	2023-09-22 21:20:08

#	User	Runtime	Language	Date
1	Albert Leung	0.08 s	Go	2020-09-13 06:26:06
2	test	0.08 s	Go	2021-01-19 13:29:52
3	Norbert Voelker	0.08 s	Go	2021-11-11 00:43:20
4	serhat can	0.62 s	Go	2022-04-19 14:06:50
5	Serhat Can	0.63 s	Go	2019-10-01 14:39:15

#	User	Runtime	Language	Date
1	Elias Riedel Gårding	0.00 s	Haskell	2018-04-03 13:05:00
2	Brent Yorgey	0.00 s	Haskell	2018-04-09 09:48:13
3	Aaron Lengyel	0.00 s	Haskell	2022-08-15 04:07:45
4	Mitchel Carson	0.00 s	Haskell	2025-04-04 02:06:12
5	Steinar Simonnes	0.00 s	Haskell	2026-01-17 16:50:44
6	Ryan O'Hara	0.01 s	Haskell	2017-09-25 21:43:06
7	Esther Chong	0.01 s	Haskell	2018-08-14 19:10:40
8	Antony Lee	0.01 s	Haskell	2018-08-24 12:22:53
9	Rudi Svartveit	0.01 s	Haskell	2018-08-24 20:52:04
10	Morten Clausen	0.01 s	Haskell	2018-12-29 20:57:22

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.04 s	Java	2025-03-10 18:31:41
2	Martijn Muijsers	0.05 s	Java	2017-05-16 14:43:11
3	José Vander Meulen	0.05 s	Java	2018-06-10 09:55:42
4	Nick Wu	0.06 s	Java	2016-08-09 05:52:33
5	William Fiset	0.06 s	Java	2016-09-12 20:57:28
6	Micah Stairs	0.06 s	Java	2016-09-12 22:54:15
7	Hidden user	0.06 s	Java	2017-01-18 21:57:07
8	Hidden user	0.06 s	Java	2018-01-22 21:40:07
9	Ali Zarrini	0.06 s	Java	2018-01-24 22:55:46
10	Brett Fazio	0.06 s	Java	2018-02-05 20:27:55

#	User	Runtime	Language	Date
1	Faleij	0.05 s	JavaScript (Node.js)	2019-06-19 22:33:21
2	Kriyen Padayachee	0.05 s	JavaScript (Node.js)	2023-11-22 14:16:46
3	Jamiu Makanjuola	0.06 s	JavaScript (Node.js)	2019-03-02 19:15:33
4	Anders Vrethem	0.06 s	JavaScript (Node.js)	2019-06-01 13:32:48
5	Marcin Z	0.41 s	JavaScript (Node.js)	2019-11-30 16:24:12
6	Ente	0.41 s	JavaScript (Node.js)	2019-11-30 18:10:34
7	Marko Drax	0.41 s	JavaScript (Node.js)	2019-11-30 18:54:00
8	Hidden user	0.41 s	JavaScript (Node.js)	2019-11-30 19:32:20
9	Yeod Tzipan	0.41 s	JavaScript (Node.js)	2019-11-30 21:16:01
10	Peter Kedemo	0.42 s	JavaScript (Node.js)	2019-12-30 12:07:29

#	User	Runtime	Language	Date
1	feihuang94	0.02 s	JavaScript (SpiderMonkey)	2020-10-30 07:20:55
2	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2022-06-16 02:12:29
3	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-10-09 09:00:52

#	User	Runtime	Language	Date
1	Timothy Gaede	0.53 s	Julia	2025-11-28 08:07:19
2	Danny Robinson	0.90 s	Julia	2023-10-14 01:22:11

#	User	Runtime	Language	Date
1	Hidden user	0.17 s	Kotlin	2018-01-07 00:32:33
2	Слава Гуляев	0.18 s	Kotlin	2017-11-14 17:51:11
3	Danny Mittal	0.19 s	Kotlin	2023-01-28 05:52:22
4	Adam Rankin	0.22 s	Kotlin	2023-09-12 21:49:35
5	Phường Lên	0.23 s	Kotlin	2020-03-02 05:38:40
6	Hidden user	0.25 s	Kotlin	2020-03-01 03:07:12

#	User	Runtime	Language	Date
1	Constantijn Dekker	0.00 s	OCaml	2022-06-13 20:34:08

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2020-01-10 13:55:30

#	User	Runtime	Language	Date
1	Ivica Huk	0.02 s	Python 2	2018-05-10 18:15:40
2	Greg Hamerly	0.03 s	Python 2	2015-05-09 02:35:21
3	Hidden user	0.03 s	Python 2	2017-07-26 21:33:22
4	Eric Dand	0.03 s	Python 2	2017-09-16 23:37:59
5	Haggai Liu	0.03 s	Python 2	2017-09-17 00:18:10
6	Andre Pratama	0.03 s	Python 2	2017-10-16 17:44:51
7	Easton Bornemeier	0.03 s	Python 2	2018-01-23 06:03:21
8	Anish George	0.03 s	Python 2	2018-02-20 21:10:18
9	Hermon Mulat	0.03 s	Python 2	2018-11-17 23:39:38
10	Urmila J	0.03 s	Python 2	2019-01-18 15:11:54

#	User	Runtime	Language	Date
1	Ciara Godwin	0.02 s	Python 3	2017-08-17 23:54:45
2	Cian Ruane	0.02 s	Python 3	2017-08-18 11:50:58
3	Ryan O'Hara	0.02 s	Python 3	2017-09-16 23:57:12
4	Noah Ó Donnaile	0.02 s	Python 3	2017-10-04 13:00:20
5	Josenildo Silva	0.02 s	Python 3	2017-12-10 00:11:05
6	Ram Basnet	0.02 s	Python 3	2017-12-23 07:38:49
7	Adam Vandolder	0.02 s	Python 3	2018-02-05 19:09:00
8	Michael Roos	0.02 s	Python 3	2018-02-07 00:44:26
9	Joel Veneracion	0.02 s	Python 3	2018-02-07 18:28:55
10	Brendon Boldt	0.02 s	Python 3	2018-02-24 22:16:04

#	User	Runtime	Language	Date
1	Stephen Downward	0.05 s	Ruby	2020-09-14 21:22:55
2	Thomas Feld	0.06 s	Ruby	2023-10-17 10:37:21

#	User	Runtime	Language	Date
1	Judith Hemp	0.00 s	Rust	2021-01-06 21:28:15
2	Bas Dirks	0.00 s	Rust	2022-05-01 09:47:24
3	Chris Seager	0.00 s	Rust	2025-04-10 00:27:48

#	User	Length	Language	Date
1	Jeroen Bransen	1564	C	2013-07-02 10:17:56
2	Oskar Liew	2283	C	2020-06-05 13:36:02
3	Seth Carter	2389	C	2017-11-20 12:36:51
4	Bergur Snorrason	6292	C	2018-11-20 19:26:11

#	User	Length	Language	Date
1	Davi Ajmaya	942	C#	2020-04-18 22:19:37
2	Vivian Saremi	2404	C#	2021-05-12 23:12:54
3	Johan Pettersson	2465	C#	2018-04-24 22:35:53
4	Linda Vennerlund	2548	C#	2021-04-14 22:43:57
5	Sam Bagheri	2553	C#	2021-05-12 22:32:20
6	Javad Ghamari	2562	C#	2019-08-10 17:11:44

#	User	Length	Language	Date
1	Hidden user	617	C++	2025-04-15 17:09:56
2	Mugeon Kim	838	C++	2024-07-09 01:08:01
3	Garðar Ingvarsson	876	C++	2019-02-08 14:17:50
4	Gabriella Gloria	953	C++	2025-05-07 19:04:47
5	Johan Wind	977	C++	2018-03-20 02:45:36
6	Kaifei Chen	1031	C++	2013-07-02 09:24:05
7	Hoang Vu	1082	C++	2021-03-03 22:09:39
8	Hidden user	1085	C++	2024-11-20 21:55:23
9	Lin Feng	1114	C++	2013-07-02 15:51:03
10	Eimhin McDonald	1132	C++	2018-05-04 22:39:50

#	User	Length	Language	Date
1	David Cawthon	2628	Common Lisp	2020-08-03 04:35:51

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	2646	F#	2023-09-22 21:20:08

#	User	Length	Language	Date
1	Norbert Voelker	1041	Go	2021-11-11 00:43:20
2	test	1243	Go	2021-01-19 13:29:52
3	Albert Leung	1477	Go	2020-09-13 06:26:06
4	serhat can	2022	Go	2022-04-19 14:06:50
5	Serhat Can	3628	Go	2019-10-01 14:39:15

#	User	Length	Language	Date
1	Steinar Simonnes	1013	Haskell	2026-01-17 16:50:44
2	Ryan O'Hara	1279	Haskell	2017-09-25 21:43:06
3	Michael Gilliland	1371	Haskell	2020-10-29 20:09:14
4	Rudi Svartveit	1406	Haskell	2018-08-24 20:52:04
5	Morten Clausen	1414	Haskell	2018-12-29 20:57:22
6	Elias Riedel Gårding	1440	Haskell	2018-04-03 13:05:00
7	Matthew Craven	1645	Haskell	2019-10-14 04:27:18
8	Antony Lee	1657	Haskell	2018-08-24 12:22:53
9	Esther Chong	1718	Haskell	2018-08-14 19:10:40
10	Brent Yorgey	1911	Haskell	2018-04-09 09:48:13

#	User	Length	Language	Date
1	Evan Magill	770	Java	2022-11-16 03:09:52
2	Nicholas Benson	1144	Java	2017-09-17 00:02:43
3	Hidden user	1204	Java	2023-02-06 12:45:38
4	Abdellah Ouadi	1206	Java	2023-04-21 21:43:47
5	Abderrahime FILALI	1208	Java	2025-02-12 23:00:07
6	Hidden user	1214	Java	2016-11-07 23:44:35
7	Doug Goodman	1471	Java	2018-03-26 21:33:28
8	Marius Lindvall	1506	Java	2018-03-20 10:43:00
9	Hidden user	1574	Java	2018-01-22 21:40:07
10	Mattias Jerrewing	1612	Java	2018-04-15 04:05:29

#	User	Length	Language	Date
1	Marcin Z	563	JavaScript (Node.js)	2019-11-30 18:12:16
2	Marko Drax	573	JavaScript (Node.js)	2019-11-30 18:54:00
3	Sumeet Kumar	687	JavaScript (Node.js)	2021-03-21 12:57:54
4	Ritwik Jain	716	JavaScript (Node.js)	2020-12-12 17:36:05
5	Harneet Singh	716	JavaScript (Node.js)	2021-04-17 04:27:05
6	Faleij	876	JavaScript (Node.js)	2019-06-20 14:24:20
7	Hidden user	1237	JavaScript (Node.js)	2019-12-01 00:01:53
8	Yeod Tzipan	1298	JavaScript (Node.js)	2019-11-30 21:16:01
9	Peter Kedemo	1431	JavaScript (Node.js)	2019-12-30 12:07:29
10	Hidden user	1482	JavaScript (Node.js)	2020-11-17 21:17:39

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	576	JavaScript (SpiderMonkey)	2023-10-09 09:00:52
2	Bjørn Chr. Soltvedt	670	JavaScript (SpiderMonkey)	2022-06-16 02:12:29
3	feihuang94	1131	JavaScript (SpiderMonkey)	2020-10-30 07:20:55

#	User	Length	Language	Date
1	Danny Robinson	224	Julia	2023-10-14 01:22:11
2	Timothy Gaede	1568	Julia	2025-11-28 08:07:19

#	User	Length	Language	Date
1	Phường Lên	1071	Kotlin	2020-03-02 05:38:40
2	Hidden user	1284	Kotlin	2020-03-01 03:07:12
3	Danny Mittal	1401	Kotlin	2023-01-28 05:52:22
4	Adam Rankin	1563	Kotlin	2023-09-12 21:49:35
5	Слава Гуляев	2421	Kotlin	2017-11-14 17:51:11
6	Hidden user	3553	Kotlin	2018-01-07 00:32:33

#	User	Length	Language	Date
1	Constantijn Dekker	1772	OCaml	2022-06-13 20:34:08

#	User	Length	Language	Date
1	Ingemar Ragnemalm	3511	Pascal	2020-01-10 13:55:30

#	User	Length	Language	Date
1	Thomas Feld	438	Python 2	2019-10-21 14:36:29
2	Hermon Mulat	616	Python 2	2018-11-17 23:39:38
3	RandyWaterhouse	641	Python 2	2021-06-28 07:51:32
4	Kristin Farris	646	Python 2	2018-01-23 06:09:54
5	Easton Bornemeier	679	Python 2	2018-01-23 06:03:21
6	Lars Åström	679	Python 2	2019-10-25 23:04:10
7	Anish George	746	Python 2	2018-02-20 21:10:18
8	Urmila J	746	Python 2	2019-01-18 15:11:54
9	Andre Pratama	787	Python 2	2017-10-16 17:44:51
10	Jyothsna Pitla	804	Python 2	2020-03-18 14:21:11

#	User	Length	Language	Date
1	Yong Mao	299	Python 3	2023-10-15 03:08:50
2	Lawry Sorenson	319	Python 3	2024-08-31 00:33:05
3	Jonathan Dastrup	359	Python 3	2024-08-28 21:37:02
4	Kasra Ghodsi	389	Python 3	2018-05-26 19:32:43
5	Oskar Haarklou Veileborg	435	Python 3	2020-05-10 23:13:44
6	Nicholas Russell Saerang	438	Python 3	2023-02-13 17:15:40
7	Hidden user	459	Python 3	2017-08-18 15:05:05
8	Yohannes Melese	466	Python 3	2021-09-13 10:32:51
9	Michael Baer	468	Python 3	2019-04-23 11:06:02
10	Isaac Lee	469	Python 3	2022-10-18 01:03:39

#	User	Length	Language	Date
1	Thomas Feld	122	Ruby	2023-10-17 10:46:37
2	Stephen Downward	1085	Ruby	2020-09-14 21:22:55

#	User	Length	Language	Date
1	Bas Dirks	2975	Rust	2022-05-01 09:47:24
2	Chris Seager	3318	Rust	2025-04-10 00:27:48
3	Judith Hemp	3564	Rust	2021-01-06 21:28:15

Solution running time distribution