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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
4456
342
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2371
642
1055
Combinations
NEERC 2000 Central Subregional
3609
422
1056
Centers of the Net
NEERC 2000 Central Subregional
2769
550
1057
Amount of Degrees
NEERC 2000 Central Subregional
2126
715
1058
Chocolate
NEERC 2000 Central Subregional
543
2756
1059
Expression
NEERC 2000 Central Subregional
2248
677
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2248
224
1134
Cards
NEERC 2001 Central Subregional
2568
197
1135
Recruits
NEERC 2001 Central Subregional
3158
160
1136
Parliament
NEERC 2001 Central Subregional
5067
100
1137
Bus Routes
NEERC 2001 Central Subregional
1562
322
1138
Integer Percentage
NEERC 2001 Central Subregional
2482
203
1139
City Blocks
NEERC 2001 Central Subregional
6477
78
1140
Swamp Incident
NEERC 2001 Central Subregional
1320
381
1158
Censored!
NEERC 2001 Northern Subregional
999
503
1159
Fence
NEERC 2001 Northern Subregional
664
753
1160
Network
NEERC 2001 Northern Subregional
3495
146
1161
Stripies
NEERC 2001 Northern Subregional
5475
92
1162
Currency Exchange
NEERC 2001 Northern Subregional
2571
197
1163
Chapaev
NEERC 2001 Northern Subregional
118
3963
1164
Fillword
NEERC 2001 Northern Subregional
2447
206
1165
Subnumber
NEERC 2001 Northern Subregional
536
929
1166
Funny Card Game
NEERC 2001 Northern Subregional
136
3552
1224
Spiral
NEERC 2002 Central Subregional
7752
66
1225
Flags
NEERC 2002 Central Subregional
14655
35
1226
esreveR redrO
NEERC 2002 Central Subregional
4505
114
1227
Rally Championship
NEERC 2002 Central Subregional
1693
301
1228
Array
NEERC 2002 Central Subregional
4726
108
1229
Strong Brickwork
NEERC 2002 Central Subregional
1325
384
1230
Introspective Program
NEERC 2002 Central Subregional
637
793
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
224
2192
1232
Asteroid Landing
NEERC 2002 Central Subregional
206
2375
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
754
679
1275
Knights of the Round Table
NEERC 2003 Central Subregional
206
2403
1276
Train
NEERC 2003 Central Subregional
696
735
1277
Cops and Thieves
NEERC 2003 Central Subregional
589
866
1278
“… Connecting People”
NEERC 2003 Central Subregional
516
987
1279
Warehouse
NEERC 2003 Central Subregional
1218
423
1280
Topological Sorting
NEERC 2003 Central Subregional
3661
141
1281
River Basin
NEERC 2003 Central Subregional
277
1808
1282
Game Tree
NEERC 2003 Central Subregional
1530
337
1500
Pass Licenses
NEERC 2006 Eastern Subregional
756
640
1501
Sense of Beauty
NEERC 2006 Eastern Subregional
1827
267
1502
Domino Dots
NEERC 2006 Eastern Subregional
6627
74
1503
Polynomial
NEERC 2006 Eastern Subregional
274
1727
1504
Good Manners
NEERC 2006 Eastern Subregional
210
2229
1505
Oil Transfer
NEERC 2006 Eastern Subregional
160
2885
1506
Columns of Numbers
NEERC 2006 Eastern Subregional
3561
137
1507
Difficult Decision
NEERC 2006 Eastern Subregional
1094
444
1508
Japanese Puzzle
NEERC 2006 Eastern Subregional
297
1598
1509
Domino Recognition
NEERC 2006 Eastern Subregional
133
3430
1510
Order
NEERC 2006 Eastern Subregional
5655
87
1582
Bookmakers
NEERC 2007 Eastern Subregional
3717
123
1583
Cheese
NEERC 2007 Eastern Subregional
238
1842
1584
Pharaohs’ Secrets
NEERC 2007 Eastern Subregional
332
1336
1585
Penguins
NEERC 2007 Eastern Subregional
12025
38
1586
Threeprime Numbers
NEERC 2007 Eastern Subregional
3163
144
1587
Flying Pig
NEERC 2007 Eastern Subregional
547
820
1588
Jamaica
NEERC 2007 Eastern Subregional
1393
326
1589
Sokoban
NEERC 2007 Eastern Subregional
6
28555
1590
Bacon’s Cipher
NEERC 2007 Eastern Subregional
2443
186
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
427
1046
1592
Chinese Watches
NEERC 2007 Eastern Subregional
767
588
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
51
6962
1650
Billionaires
NEERC 2008 Eastern Subregional
2297
184
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1221
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
148
2688
1653
Death Conveyor
NEERC 2008 Eastern Subregional
58
6246
1654
Cipher Message
NEERC 2008 Eastern Subregional
7104
60
1655
Somali Pirates
NEERC 2008 Eastern Subregional
221
1839
1656
Far Away Kingdom's Army
NEERC 2008 Eastern Subregional
2055
206
1657
Cube Snake
NEERC 2008 Eastern Subregional
267
1533
1658
Sum of Digits
NEERC 2008 Eastern Subregional
2089
202
1659
Regular Triangles
NEERC 2008 Eastern Subregional
641
652
1711
Code Names
NEERC 2009 Eastern Subregional
2952
134
1712
Cipher Grille
NEERC 2009 Eastern Subregional
4612
86
1713
Key Substrings
NEERC 2009 Eastern Subregional
619
630
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
113
3223
1715
Another Ball Killer
NEERC 2009 Eastern Subregional
384
1006
1716
Alternative Solution
NEERC 2009 Eastern Subregional
530
734
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
169
2215
1718
Rejudge
NEERC 2009 Eastern Subregional
1283
307
1719
Kill the Shaitan-Boss
NEERC 2009 Eastern Subregional
262
1458
1720
Summit Online Judge
NEERC 2009 Eastern Subregional
397
974
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
675
579
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2168
168
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
56
5549
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
163
2117
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
508
707
1804
The Machinegunners in a Playoff
NEERC 2010 Eastern Subregional
889
407
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
353
1009
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1910
191
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
237
1483
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
184
1888
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
611
590
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1769
191
1886
Trip 2
NEERC 2011 Eastern Subregional
154
2067
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
310
1059
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
730
458
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1104
304
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
726
461
1891
Language Ocean
NEERC 2011 Eastern Subregional
472
703
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
373
885
1893
A380
NEERC 2011 Eastern Subregional
5680
60
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
227
1430
1895
Steaks on Board
NEERC 2011 Eastern Subregional
148
2145
1910
Titan Ruins: Hidden Entrance
NEERC 2012 Eastern Subregional
9261
34
1911
Titan Ruins: Overtaking Fire
NEERC 2012 Eastern Subregional
59
4540
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
237
1268
1913
Titan Ruins: Alignment of Forces
NEERC 2012 Eastern Subregional
153
1922
1914
Titan Ruins: Serial Control
NEERC 2012 Eastern Subregional
69
3965
1915
Titan Ruins: Reconstruction of Bygones
NEERC 2012 Eastern Subregional
1401
222
1916
Titan Ruins: Waiting for Stability
NEERC 2012 Eastern Subregional
89
3164
1917
Titan Ruins: Deadly Accuracy
NEERC 2012 Eastern Subregional
1304
238
1918
Titan Ruins: Artful Manipulations
NEERC 2012 Eastern Subregional
324
938
1919
Titan Ruins: Transformation of Cylinders
NEERC 2012 Eastern Subregional
139
2103
1920
Titan Ruins: the Infinite Power of Magic
NEERC 2012 Eastern Subregional
424
722
1990
Podracing
NEERC 2013 Eastern Subregional
262
1057
1991
The battle near the swamp
NEERC 2013 Eastern Subregional
6023
48
1992
CVS
NEERC 2013 Eastern Subregional
773
367
1993
This cheeseburger you don't need
NEERC 2013 Eastern Subregional
1418
201
1994
The Emperor's plan
NEERC 2013 Eastern Subregional
263
1053
1995
Illegal spices
NEERC 2013 Eastern Subregional
465
605
1996
Cipher Message 3
NEERC 2013 Eastern Subregional
221
1245
1997
Those are not the droids you're looking for
NEERC 2013 Eastern Subregional
519
544
1998
The old Padawan
NEERC 2013 Eastern Subregional
762
372
1999
The secret module
NEERC 2013 Eastern Subregional
34
6535
2012
About Grisha N.
NEERC 2014 Eastern Subregional
15786
17
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
270
943
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
473
547
2015
Zhenya moves from the dormitory
NEERC 2014 Eastern Subregional
883
296
2016
Magic and Science
NEERC 2014 Eastern Subregional
25
7545
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
185
1354
2018
The Debut Album
NEERC 2014 Eastern Subregional
2605
101
2019
Pair: normal and paranormal
NEERC 2014 Eastern Subregional
893
292
2020
Traffic Jam in Flower Town
NEERC 2014 Eastern Subregional
1648
159
2021
Scarily interesting!
NEERC 2014 Eastern Subregional
570
455
2022
Riding a Toad
NEERC 2014 Eastern Subregional
60
3773
2023
Donald is a postman
NEERC 2014 Eastern Subregional
6765
39
2074
Timus problems classifier
NEERC 2015 Eastern Subregional Qualifier
223
996
2075
Take care of your eyebrows!
NEERC 2015 Eastern Subregional Qualifier
74
2762
2076
Vasiana
NEERC 2015 Eastern Subregional Qualifier
23
7031
2077
Reductions
NEERC 2015 Eastern Subregional Qualifier
23
7031
2190
Match of the Millennium
ICPC Ural Regional Contest Qualifier 2022
30
1209
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
11
2297
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
38
1008
2193
Old Barabarian Rap
ICPC Ural Regional Contest Qualifier 2022
20
1608
2194
Snakes&Snakes
ICPC Ural Regional Contest Qualifier 2023
50
806
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
14
2016
2196
Apocalypse
ICPC Ural Regional Contest Qualifier 2023
13
2095
2197
Work is not a wolf; a wolf is to walk
ICPC Ural Regional Contest Qualifier 2024
12
2199
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
26
1341
2199
Company Question
ICPC Ural Regional Contest Qualifier 2024
29
1240
2216
Big Elevator
ICPC Ural Regional Contest Qualifier 2025
16
1084
2217
Binary Sort
ICPC Ural Regional Contest Qualifier 2025
24
829
2218
Prorun
ICPC Ural Regional Contest Qualifier 2025
9
1482
2219
Philosophical Question
ICPC Ural Regional Contest Qualifier 2025
10
1405
2220
Reciprocal of GCD
ICPC Ural Regional Contest Qualifier 2025
13
1223
2221
Convex Hull Treap
ICPC Ural Regional Contest Qualifier 2025
7
1652
2222
Сavalry Battle Advanced
ICPC Ural Regional Contest Qualifier 2025
5
1872
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