Problem A
Polish Notation — Problem Statistics

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Submissions	3419
Accepted submissions	767
Submission ratio	22.43%
Authors	670
Full solves [?]	520
Full solve Ratio	77.61%

#	User	Runtime	Language	Date
1	Jeroen Bransen	0.00 s	C	2013-07-02 08:17:56
2	Seth Carter	0.00 s	C	2017-11-20 11:36:51
3	Bergur Snorrason	0.00 s	C	2018-11-20 18:26:11
4	David Wüstenhagen	0.00 s	C	2020-03-26 21:22:18
5	Oskar Liew	0.00 s	C	2020-06-05 11:36:02
6	Kennedy Francis	0.00 s	C	2020-10-22 16:14:40

#	User	Runtime	Language	Date
1	Johan Pettersson	0.02 s	C#	2018-04-24 20:35:53
2	Henrik Ledin	0.02 s	C#	2018-09-11 07:22:36
3	Javad Ghamari	0.03 s	C#	2019-08-10 15:11:44
4	Mohamed Samir	0.03 s	C#	2019-10-10 12:04:50
5	asmat khan	0.03 s	C#	2020-02-20 23:14:16
6	Issa Hijazi	0.03 s	C#	2020-03-11 21:52:00
7	Mahdi Rouzbahaneh	0.03 s	C#	2020-03-13 14:05:55
8	Davi Ajmaya	0.03 s	C#	2020-04-18 20:19:37
9	Allan Kamuran	0.03 s	C#	2020-04-18 20:27:28
10	Ali Ghazi	0.03 s	C#	2020-05-25 17:49:37

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-08-03 02:35:51

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.10 s	F#	2023-09-22 19:20:08

#	User	Runtime	Language	Date
1	Albert Leung	0.08 s	Go	2020-09-13 04:26:06
2	test	0.08 s	Go	2021-01-19 12:29:52
3	Norbert Voelker	0.08 s	Go	2021-11-10 23:43:20
4	serhat can	0.62 s	Go	2022-04-19 12:06:50
5	Serhat Can	0.63 s	Go	2019-10-01 12:39:15

#	User	Runtime	Language	Date
1	Elias Riedel Gårding	0.00 s	Haskell	2018-04-03 11:05:00
2	Brent Yorgey	0.00 s	Haskell	2018-04-09 07:48:13
3	Aaron Lengyel	0.00 s	Haskell	2022-08-15 02:07:45
4	Mitchel Carson	0.00 s	Haskell	2025-04-04 00:06:12
5	Ryan O'Hara	0.01 s	Haskell	2017-09-25 19:43:06
6	Esther Chong	0.01 s	Haskell	2018-08-14 17:10:40
7	Antony Lee	0.01 s	Haskell	2018-08-24 10:22:53
8	Rudi Svartveit	0.01 s	Haskell	2018-08-24 18:52:04
9	Morten Clausen	0.01 s	Haskell	2018-12-29 19:57:22
10	Isaac Arvestad	0.01 s	Haskell	2019-04-15 20:51:19

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.04 s	Java	2025-03-10 17:31:41
2	Martijn Muijsers	0.05 s	Java	2017-05-16 12:43:11
3	José Vander Meulen	0.05 s	Java	2018-06-10 07:55:42
4	Nick Wu	0.06 s	Java	2016-08-09 03:52:33
5	William Fiset	0.06 s	Java	2016-09-12 18:57:28
6	Micah Stairs	0.06 s	Java	2016-09-12 20:54:15
7	Hidden user	0.06 s	Java	2017-01-18 20:57:07
8	Hidden user	0.06 s	Java	2018-01-22 20:40:07
9	Ali Zarrini	0.06 s	Java	2018-01-24 21:55:46
10	Brett Fazio	0.06 s	Java	2018-02-05 19:27:55

#	User	Runtime	Language	Date
1	Faleij	0.05 s	JavaScript (Node.js)	2019-06-19 20:33:21
2	Kriyen Padayachee	0.05 s	JavaScript (Node.js)	2023-11-22 13:16:46
3	Jamiu Makanjuola	0.06 s	JavaScript (Node.js)	2019-03-02 18:15:33
4	Anders Vrethem	0.06 s	JavaScript (Node.js)	2019-06-01 11:32:48
5	Marcin Z	0.41 s	JavaScript (Node.js)	2019-11-30 15:24:12
6	Ente	0.41 s	JavaScript (Node.js)	2019-11-30 17:10:34
7	Marko Drax	0.41 s	JavaScript (Node.js)	2019-11-30 17:54:00
8	Hidden user	0.41 s	JavaScript (Node.js)	2019-11-30 18:32:20
9	Yeod Tzipan	0.41 s	JavaScript (Node.js)	2019-11-30 20:16:01
10	Peter Kedemo	0.42 s	JavaScript (Node.js)	2019-12-30 11:07:29

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

#	User	Runtime	Language	Date
1	Timothy Gaede	0.53 s	Julia	2025-11-28 07:07:19
2	Danny Robinson	0.90 s	Julia	2023-10-13 23:22:11

#	User	Runtime	Language	Date
1	Hidden user	0.17 s	Kotlin	2018-01-06 23:32:33
2	Слава Гуляев	0.18 s	Kotlin	2017-11-14 16:51:11
3	Danny Mittal	0.19 s	Kotlin	2023-01-28 04:52:22
4	Adam Rankin	0.22 s	Kotlin	2023-09-12 19:49:35
5	Phường Lên	0.23 s	Kotlin	2020-03-02 04:38:40
6	Hidden user	0.25 s	Kotlin	2020-03-01 02:07:12

#	User	Runtime	Language	Date
1	Constantijn Dekker	0.00 s	OCaml	2022-06-13 18:34:08

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2020-01-10 12:55:30

#	User	Runtime	Language	Date
1	Ivica Huk	0.02 s	Python 2	2018-05-10 16:15:40
2	Greg Hamerly	0.03 s	Python 2	2015-05-09 00:35:21
3	Hidden user	0.03 s	Python 2	2017-07-26 19:33:22
4	Eric Dand	0.03 s	Python 2	2017-09-16 21:37:59
5	Haggai Liu	0.03 s	Python 2	2017-09-16 22:18:10
6	Andre Pratama	0.03 s	Python 2	2017-10-16 15:44:51
7	Easton Bornemeier	0.03 s	Python 2	2018-01-23 05:03:21
8	Anish George	0.03 s	Python 2	2018-02-20 20:10:18
9	Hermon Mulat	0.03 s	Python 2	2018-11-17 22:39:38
10	Urmila J	0.03 s	Python 2	2019-01-18 14:11:54

#	User	Runtime	Language	Date
1	Ciara Godwin	0.02 s	Python 3	2017-08-17 21:54:45
2	Cian Ruane	0.02 s	Python 3	2017-08-18 09:50:58
3	Ryan O'Hara	0.02 s	Python 3	2017-09-16 21:57:12
4	Noah Ó Donnaile	0.02 s	Python 3	2017-10-04 11:00:20
5	Josenildo Silva	0.02 s	Python 3	2017-12-09 23:11:05
6	Ram Basnet	0.02 s	Python 3	2017-12-23 06:38:49
7	Adam Vandolder	0.02 s	Python 3	2018-02-05 18:09:00
8	Michael Roos	0.02 s	Python 3	2018-02-06 23:44:26
9	Joel Veneracion	0.02 s	Python 3	2018-02-07 17:28:55
10	Brendon Boldt	0.02 s	Python 3	2018-02-24 21:16:04

#	User	Runtime	Language	Date
1	Stephen Downward	0.05 s	Ruby	2020-09-14 19:22:55
2	Thomas Feld	0.06 s	Ruby	2023-10-17 08:37:21

#	User	Runtime	Language	Date
1	Judith Hemp	0.00 s	Rust	2021-01-06 20:28:15
2	Bas Dirks	0.00 s	Rust	2022-05-01 07:47:24
3	Chris Seager	0.00 s	Rust	2025-04-09 22:27:48

#	User	Length	Language	Date
1	Jeroen Bransen	1564	C	2013-07-02 08:17:56
2	Oskar Liew	2283	C	2020-06-05 11:36:02
3	Seth Carter	2389	C	2017-11-20 11:36:51
4	Kennedy Francis	2886	C	2020-10-22 16:31:14
5	David Wüstenhagen	4473	C	2020-03-26 21:22:18
6	Bergur Snorrason	6292	C	2018-11-20 18:26:11

#	User	Length	Language	Date
1	Davi Ajmaya	942	C#	2020-04-18 20:19:37
2	Allan Kamuran	1439	C#	2020-04-18 20:27:28
3	Ali Ghazi	1580	C#	2020-05-25 17:49:37
4	David Olmårs	1893	C#	2021-01-17 22:26:46
5	Issa Hijazi	2190	C#	2020-03-11 21:52:00
6	Vivian Saremi	2404	C#	2021-05-12 21:12:54
7	Johan Pettersson	2465	C#	2018-04-24 20:35:53
8	Linda Vennerlund	2548	C#	2021-04-14 20:43:57
9	Sam Bagheri	2553	C#	2021-05-12 20:32:20
10	Javad Ghamari	2562	C#	2019-08-10 15:11:44

#	User	Length	Language	Date
1	Yeoh Han Yi	617	C++	2025-04-15 15:09:56
2	Mugeon Kim	838	C++	2024-07-08 23:08:01
3	Garðar Ingvarsson	876	C++	2019-02-08 13:17:50
4	Gabriella Gloria	953	C++	2025-05-07 17:04:47
5	Johan Wind	977	C++	2018-03-20 01:45:36
6	Kaifei Chen	1031	C++	2013-07-02 07:24:05
7	Hoang Vu	1082	C++	2021-03-03 21:09:39
8	Hidden user	1085	C++	2024-11-20 20:55:23
9	Lin Feng	1114	C++	2013-07-02 13:51:03
10	Eimhin McDonald	1132	C++	2018-05-04 20:39:50

#	User	Length	Language	Date
1	David Cawthon	2628	Common Lisp	2020-08-03 02:35:51

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	2646	F#	2023-09-22 19:20:08

#	User	Length	Language	Date
1	Norbert Voelker	1041	Go	2021-11-10 23:43:20
2	test	1243	Go	2021-01-19 12:29:52
3	Albert Leung	1477	Go	2020-09-13 04:26:06
4	serhat can	2022	Go	2022-04-19 12:06:50
5	Serhat Can	3628	Go	2019-10-01 12:39:15

#	User	Length	Language	Date
1	Ryan O'Hara	1279	Haskell	2017-09-25 19:43:06
2	Michael Gilliland	1371	Haskell	2020-10-29 19:09:14
3	Rudi Svartveit	1406	Haskell	2018-08-24 18:52:04
4	Morten Clausen	1414	Haskell	2018-12-29 19:57:22
5	Elias Riedel Gårding	1440	Haskell	2018-04-03 11:05:00
6	Matthew Craven	1645	Haskell	2019-10-14 02:27:18
7	Antony Lee	1657	Haskell	2018-08-24 10:22:53
8	Esther Chong	1718	Haskell	2018-08-14 17:10:40
9	Brent Yorgey	1911	Haskell	2018-04-09 07:48:13
10	Isaac Arvestad	1914	Haskell	2019-04-15 20:51:19

#	User	Length	Language	Date
1	Evan Magill	770	Java	2022-11-16 02:09:52
2	Nicholas Benson	1144	Java	2017-09-16 22:02:43
3	Hidden user	1204	Java	2023-02-06 11:45:38
4	Abdellah Ouadi	1206	Java	2023-04-21 19:43:47
5	Abderrahime FILALI	1208	Java	2025-02-12 22:00:07
6	Hidden user	1214	Java	2016-11-07 22:44:35
7	Doug Goodman	1471	Java	2018-03-26 19:33:28
8	Marius Lindvall	1506	Java	2018-03-20 09:43:00
9	Hidden user	1574	Java	2018-01-22 20:40:07
10	Mattias Jerrewing	1612	Java	2018-04-15 02:05:29

#	User	Length	Language	Date
1	Marcin Z	563	JavaScript (Node.js)	2019-11-30 17:12:16
2	Marko Drax	573	JavaScript (Node.js)	2019-11-30 17:54:00
3	Sumeet Kumar	687	JavaScript (Node.js)	2021-03-21 11:57:54
4	Ritwik Jain	716	JavaScript (Node.js)	2020-12-12 16:36:05
5	Harneet Singh	716	JavaScript (Node.js)	2021-04-17 02:27:05
6	Faleij	876	JavaScript (Node.js)	2019-06-20 12:24:20
7	Hidden user	1237	JavaScript (Node.js)	2019-11-30 23:01:53
8	Yeod Tzipan	1298	JavaScript (Node.js)	2019-11-30 20:16:01
9	Peter Kedemo	1431	JavaScript (Node.js)	2019-12-30 11:07:29
10	Hidden user	1482	JavaScript (Node.js)	2020-11-17 20:17:39

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

#	User	Length	Language	Date
1	Danny Robinson	224	Julia	2023-10-13 23:22:11
2	Timothy Gaede	1568	Julia	2025-11-28 07:07:19

#	User	Length	Language	Date
1	Phường Lên	1071	Kotlin	2020-03-02 04:38:40
2	Hidden user	1284	Kotlin	2020-03-01 02:07:12
3	Danny Mittal	1401	Kotlin	2023-01-28 04:52:22
4	Adam Rankin	1563	Kotlin	2023-09-12 19:49:35
5	Слава Гуляев	2421	Kotlin	2017-11-14 16:51:11
6	Hidden user	3553	Kotlin	2018-01-06 23:32:33

#	User	Length	Language	Date
1	Constantijn Dekker	1772	OCaml	2022-06-13 18:34:08

#	User	Length	Language	Date
1	Ingemar Ragnemalm	3511	Pascal	2020-01-10 12:55:30

#	User	Length	Language	Date
1	Thomas Feld	438	Python 2	2019-10-21 12:36:29
2	Hermon Mulat	616	Python 2	2018-11-17 22:39:38
3	RandyWaterhouse	641	Python 2	2021-06-28 05:51:32
4	Kristin Farris	646	Python 2	2018-01-23 05:09:54
5	Easton Bornemeier	679	Python 2	2018-01-23 05:03:21
6	Lars Åström	679	Python 2	2019-10-25 21:04:10
7	Anish George	746	Python 2	2018-02-20 20:10:18
8	Urmila J	746	Python 2	2019-01-18 14:11:54
9	Andre Pratama	787	Python 2	2017-10-16 15:44:51
10	Jyothsna Pitla	804	Python 2	2020-03-18 13:21:11

#	User	Length	Language	Date
1	Yong Mao	299	Python 3	2023-10-15 01:08:50
2	Lawry Sorenson	319	Python 3	2024-08-30 22:33:05
3	Jonathan Dastrup	359	Python 3	2024-08-28 19:37:02
4	Kasra Ghodsi	389	Python 3	2018-05-26 17:32:43
5	Oskar Haarklou Veileborg	435	Python 3	2020-05-10 21:13:44
6	Nicholas Russell Saerang	438	Python 3	2023-02-13 16:15:40
7	Hidden user	459	Python 3	2017-08-18 13:05:05
8	Yohannes Melese	466	Python 3	2021-09-13 08:32:51
9	Michael Baer	468	Python 3	2019-04-23 09:06:02
10	Isaac Lee	469	Python 3	2022-10-17 23:03:39

#	User	Length	Language	Date
1	Thomas Feld	122	Ruby	2023-10-17 08:46:37
2	Stephen Downward	1085	Ruby	2020-09-14 19:22:55

#	User	Length	Language	Date
1	Bas Dirks	2975	Rust	2022-05-01 07:47:24
2	Chris Seager	3318	Rust	2025-04-09 22:27:48
3	Judith Hemp	3564	Rust	2021-01-06 20:28:15

Solution running time distribution