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Problem set. NEERC Regionals
Solved problems:
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difficulty
ID
Title
Source
Authors
Difficulty
1053
Pinocchio
NEERC 2000 Central Subregional
4461
343
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2381
642
1055
Combinations
NEERC 2000 Central Subregional
3615
423
1056
Centers of the Net
NEERC 2000 Central Subregional
2774
551
1057
Amount of Degrees
NEERC 2000 Central Subregional
2130
717
1058
Chocolate
NEERC 2000 Central Subregional
548
2743
1059
Expression
NEERC 2000 Central Subregional
2253
678
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2253
225
1134
Cards
NEERC 2001 Central Subregional
2572
197
1135
Recruits
NEERC 2001 Central Subregional
3165
160
1136
Parliament
NEERC 2001 Central Subregional
5081
100
1137
Bus Routes
NEERC 2001 Central Subregional
1598
316
1138
Integer Percentage
NEERC 2001 Central Subregional
2486
204
1139
City Blocks
NEERC 2001 Central Subregional
6492
78
1140
Swamp Incident
NEERC 2001 Central Subregional
1321
382
1158
Censored!
NEERC 2001 Northern Subregional
1003
503
1159
Fence
NEERC 2001 Northern Subregional
669
750
1160
Network
NEERC 2001 Northern Subregional
3655
141
1161
Stripies
NEERC 2001 Northern Subregional
5483
93
1162
Currency Exchange
NEERC 2001 Northern Subregional
2741
185
1163
Chapaev
NEERC 2001 Northern Subregional
127
3717
1164
Fillword
NEERC 2001 Northern Subregional
2450
207
1165
Subnumber
NEERC 2001 Northern Subregional
545
918
1166
Funny Card Game
NEERC 2001 Northern Subregional
141
3448
1224
Spiral
NEERC 2002 Central Subregional
7770
66
1225
Flags
NEERC 2002 Central Subregional
14704
35
1226
esreveR redrO
NEERC 2002 Central Subregional
4514
114
1227
Rally Championship
NEERC 2002 Central Subregional
1701
301
1228
Array
NEERC 2002 Central Subregional
4735
109
1229
Strong Brickwork
NEERC 2002 Central Subregional
1328
385
1230
Introspective Program
NEERC 2002 Central Subregional
640
792
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
228
2163
1232
Asteroid Landing
NEERC 2002 Central Subregional
210
2340
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
759
677
1275
Knights of the Round Table
NEERC 2003 Central Subregional
220
2265
1276
Train
NEERC 2003 Central Subregional
700
734
1277
Cops and Thieves
NEERC 2003 Central Subregional
594
863
1278
“… Connecting People”
NEERC 2003 Central Subregional
521
981
1279
Warehouse
NEERC 2003 Central Subregional
1220
424
1280
Topological Sorting
NEERC 2003 Central Subregional
3700
140
1281
River Basin
NEERC 2003 Central Subregional
282
1784
1282
Game Tree
NEERC 2003 Central Subregional
1534
337
1500
Pass Licenses
NEERC 2006 Eastern Subregional
758
641
1501
Sense of Beauty
NEERC 2006 Eastern Subregional
1834
267
1502
Domino Dots
NEERC 2006 Eastern Subregional
6641
74
1503
Polynomial
NEERC 2006 Eastern Subregional
278
1710
1504
Good Manners
NEERC 2006 Eastern Subregional
215
2189
1505
Oil Transfer
NEERC 2006 Eastern Subregional
164
2831
1506
Columns of Numbers
NEERC 2006 Eastern Subregional
3568
138
1507
Difficult Decision
NEERC 2006 Eastern Subregional
1097
445
1508
Japanese Puzzle
NEERC 2006 Eastern Subregional
304
1569
1509
Domino Recognition
NEERC 2006 Eastern Subregional
136
3373
1510
Order
NEERC 2006 Eastern Subregional
5665
87
1582
Bookmakers
NEERC 2007 Eastern Subregional
3725
123
1583
Cheese
NEERC 2007 Eastern Subregional
242
1822
1584
Pharaohs’ Secrets
NEERC 2007 Eastern Subregional
333
1339
1585
Penguins
NEERC 2007 Eastern Subregional
12074
38
1586
Threeprime Numbers
NEERC 2007 Eastern Subregional
3184
144
1587
Flying Pig
NEERC 2007 Eastern Subregional
550
820
1588
Jamaica
NEERC 2007 Eastern Subregional
1399
326
1589
Sokoban
NEERC 2007 Eastern Subregional
8
25505
1590
Bacon’s Cipher
NEERC 2007 Eastern Subregional
2458
186
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
430
1043
1592
Chinese Watches
NEERC 2007 Eastern Subregional
773
586
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
54
6673
1650
Billionaires
NEERC 2008 Eastern Subregional
2440
174
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1227
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
151
2652
1653
Death Conveyor
NEERC 2008 Eastern Subregional
61
6015
1654
Cipher Message
NEERC 2008 Eastern Subregional
7128
60
1655
Somali Pirates
NEERC 2008 Eastern Subregional
224
1825
1656
Far Away Kingdom's Army
NEERC 2008 Eastern Subregional
2069
205
1657
Cube Snake
NEERC 2008 Eastern Subregional
268
1536
1658
Sum of Digits
NEERC 2008 Eastern Subregional
2093
203
1659
Regular Triangles
NEERC 2008 Eastern Subregional
647
650
1711
Code Names
NEERC 2009 Eastern Subregional
2960
134
1712
Cipher Grille
NEERC 2009 Eastern Subregional
4624
86
1713
Key Substrings
NEERC 2009 Eastern Subregional
622
631
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
115
3191
1715
Another Ball Killer
NEERC 2009 Eastern Subregional
384
1012
1716
Alternative Solution
NEERC 2009 Eastern Subregional
537
729
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
173
2180
1718
Rejudge
NEERC 2009 Eastern Subregional
1287
308
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
265
1451
1720
Summit Online Judge
NEERC 2009 Eastern Subregional
398
978
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
680
578
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2173
169
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
61
5195
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
167
2084
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
509
711
1804
The Machinegunners in a Playoff
NEERC 2010 Eastern Subregional
892
409
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
356
1008
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
2064
178
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
240
1475
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
187
1872
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
612
593
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1775
191
1886
Trip 2
NEERC 2011 Eastern Subregional
156
2058
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
310
1068
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
732
460
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1107
306
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
728
463
1891
Language Ocean
NEERC 2011 Eastern Subregional
473
707
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
376
885
1893
A380
NEERC 2011 Eastern Subregional
5698
60
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
229
1430
1895
Steaks on Board
NEERC 2011 Eastern Subregional
150
2135
1910
Titan Ruins: Hidden Entrance
NEERC 2012 Eastern Subregional
9278
34
1911
Titan Ruins: Overtaking Fire
NEERC 2012 Eastern Subregional
62
4390
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
238
1274
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
158
1881
1914
Titan Ruins: Serial Control
NEERC 2012 Eastern Subregional
74
3763
1915
Titan Ruins: Reconstruction of Bygones
NEERC 2012 Eastern Subregional
1404
224
1916
Titan Ruins: Waiting for Stability
NEERC 2012 Eastern Subregional
93
3069
1917
Titan Ruins: Deadly Accuracy
NEERC 2012 Eastern Subregional
1307
240
1918
Titan Ruins: Artful Manipulations
NEERC 2012 Eastern Subregional
329
932
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
142
2079
1920
Titan Ruins: the Infinite Power of Magic
NEERC 2012 Eastern Subregional
426
725
1990
Podracing
NEERC 2013 Eastern Subregional
263
1064
1991
The battle near the swamp
NEERC 2013 Eastern Subregional
6046
48
1992
CVS
NEERC 2013 Eastern Subregional
779
368
1993
This cheeseburger you don't need
NEERC 2013 Eastern Subregional
1425
202
1994
The Emperor's plan
NEERC 2013 Eastern Subregional
266
1052
1995
Illegal spices
NEERC 2013 Eastern Subregional
466
610
1996
Cipher Message 3
NEERC 2013 Eastern Subregional
224
1241
1997
Those are not the droids you're looking for
NEERC 2013 Eastern Subregional
522
546
1998
The old Padawan
NEERC 2013 Eastern Subregional
763
376
1999
The secret module
NEERC 2013 Eastern Subregional
38
6050
2012
About Grisha N.
NEERC 2014 Eastern Subregional
15862
17
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
275
937
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
477
548
2015
Zhenya moves from the dormitory
NEERC 2014 Eastern Subregional
886
298
2016
Magic and Science
NEERC 2014 Eastern Subregional
29
6848
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
190
1335
2018
The Debut Album
NEERC 2014 Eastern Subregional
2625
101
2019
Pair: normal and paranormal
NEERC 2014 Eastern Subregional
897
294
2020
Traffic Jam in Flower Town
NEERC 2014 Eastern Subregional
1653
161
2021
Scarily interesting!
NEERC 2014 Eastern Subregional
573
458
2022
Riding a Toad
NEERC 2014 Eastern Subregional
62
3709
2023
Donald is a postman
NEERC 2014 Eastern Subregional
6787
39
2074
Timus problems classifier
NEERC 2015 Eastern Subregional Qualifier
232
972
2075
Take care of your eyebrows!
NEERC 2015 Eastern Subregional Qualifier
78
2672
2076
Vasiana
NEERC 2015 Eastern Subregional Qualifier
26
6531
2077
Reductions
NEERC 2015 Eastern Subregional Qualifier
26
6531
2190
Match of the Millennium
ICPC Ural Regional Contest Qualifier 2022
36
1136
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
17
1930
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
48
901
2193
Old Barabarian Rap
ICPC Ural Regional Contest Qualifier 2022
25
1489
2194
Snakes&Snakes
ICPC Ural Regional Contest Qualifier 2023
93
507
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
22
1633
2196
Apocalypse
ICPC Ural Regional Contest Qualifier 2023
22
1627
2197
Work is not a wolf; a wolf is to walk
ICPC Ural Regional Contest Qualifier 2024
18
1866
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
31
1272
2199
Company Question
ICPC Ural Regional Contest Qualifier 2024
33
1215
2216
Big Elevator
ICPC Ural Regional Contest Qualifier 2025
37
683
2217
Binary Sort
ICPC Ural Regional Contest Qualifier 2025
45
584
2218
Prorun
ICPC Ural Regional Contest Qualifier 2025
20
1070
2219
Philosophical Question
ICPC Ural Regional Contest Qualifier 2025
22
1002
2220
Reciprocal of GCD
ICPC Ural Regional Contest Qualifier 2025
29
823
2221
Convex Hull Treap
ICPC Ural Regional Contest Qualifier 2025
15
1281
2222
Cavalry Battle Advanced
ICPC Ural Regional Contest Qualifier 2025
15
1281
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