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Problem set. Volume 9
Solved problems:
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Volume 8
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ID
Title
Source
Authors
Difficulty
1877
Bicycle Codes
Ural Regional School Programming Contest 2011
16821
19
1820
Ural Steaks
USU Personal Contest 2011
13344
25
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
10625
30
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
5999
53
1837
Isenbaev's Number
Ural Championship 2011
5599
59
1893
A380
NEERC 2011 Eastern Subregional
5514
57
1881
Long problem statement
Ural Regional School Programming Contest 2011
5337
59
1868
Prediction Contest
Ural FU Championship 2011
2104
150
1846
GCD 2010
Petrozavodsk Summer 2010. USU Contest
2101
151
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2031
169
1821
Biathlon
USU Personal Contest 2011
1948
170
1864
Get-Together at Den's
Ural FU Championship 2011
1881
168
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1687
203
1874
Football Goal
Ural Regional School Programming Contest 2011
1657
190
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1600
197
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1527
206
1869
New Year Cruise
Ural FU Championship 2011
1385
228
1826
Minefield
USU Personal Contest 2011
1108
298
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1073
292
1823
Ideal Gas
USU Personal Contest 2011
992
333
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
886
354
1804
The Machinegunners in a Playoff
NEERC 2010 Eastern Subregional
865
394
1854
Negotiations with Parthians
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
764
412
1828
Approximation by a Progression
USU Personal Contest 2011
715
460
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
698
447
1860
Fiborial
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
694
453
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
694
449
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
586
578
1871
Seismic Waves
Ural FU Championship 2011
511
609
1822
Hugo II's War
USU Personal Contest 2011
485
674
1884
Way to the University
Ural Regional School Programming Contest 2011
480
647
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
466
724
1838
Samurai's Stroke
Ural Championship 2011
459
704
1870
Zinium 2
Ural FU Championship 2011
459
677
1891
Language Ocean
NEERC 2011 Eastern Subregional
457
678
1866
Poetic Foot
Ural FU Championship 2011
419
740
1872
Spacious Office
Ural FU Championship 2011
401
773
1825
Ifrit Bomber 2
USU Personal Contest 2011
361
899
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
356
865
1830
Help in the RNOS
Ural Championship 2011
355
905
1832
Arirang Show
Ural Championship 2011
347
925
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
344
974
1817
Merry-go-round
Petrozavodsk Summer 2010. Tavrida NU Contest
324
1010
1875
Angry Birds
Ural Regional School Programming Contest 2011
323
952
1861
Graveyard in Deyja
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
315
982
1824
Ifrit Bomber
USU Personal Contest 2011
309
1046
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
291
1051
1863
Peaceful Atom
Ural FU Championship 2011
289
1062
1836
Babel Fish
Ural Championship 2011
280
1139
1827
Indigenous Wars
USU Personal Contest 2011
276
1167
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
258
1183
1862
Very Wealthy Mole
Ural FU Championship 2011
247
1235
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
238
1287
1857
Alice and Bandersnatch
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
232
1319
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
230
1436
1811
Dual-SIM Phone
Petrozavodsk Summer 2010. Tavrida NU Contest
225
1436
1896
War Games 2.1
215
895
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
214
1415
1813
Random Shuffler
Petrozavodsk Summer 2010. Tavrida NU Contest
202
1592
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
199
1514
1844
Warlord of the Army of Mages
Petrozavodsk Summer 2010. USU Contest
196
1551
1851
GOV-internship
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
179
1688
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
171
1904
1818
Fair Fishermen
Petrozavodsk Summer 2010. Tavrida NU Contest
160
1985
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
156
2076
1833
Hopes of Rowing
Ural Championship 2011
151
2052
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
144
2075
1886
Trip 2
NEERC 2011 Eastern Subregional
144
2055
1895
Steaks on Board
NEERC 2011 Eastern Subregional
139
2124
1831
Tsyfirkin's Lesson
Ural Championship 2011
133
2310
1816
Troubles with Pollard
Petrozavodsk Summer 2010. Tavrida NU Contest
131
2393
1839
The Mentaculus
Ural Championship 2011
122
2503
1849
Rabbit Hunt 2
Petrozavodsk Summer 2010. USU Contest
121
2439
1852
Cube in a Cube in a Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
121
2436
1867
Nanotechnologies
Ural FU Championship 2011
118
2480
1812
The Island of Bad Luck 2
Petrozavodsk Summer 2010. Tavrida NU Contest
111
2788
1882
Old Nokia
Ural Regional School Programming Contest 2011
107
2709
1850
Space Tourism
Petrozavodsk Summer 2010. USU Contest
104
2803
1814
Continued Fraction
Petrozavodsk Summer 2010. Tavrida NU Contest
100
3067
1835
Swamp Doctor
Ural Championship 2011
96
3117
1829
Routing Tables
USU Personal Contest 2011
93
3239
1865
The Island of Märket
Ural FU Championship 2011
86
3307
1858
Magic Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
75
3754
1856
War and Peace
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
74
3799
1810
Antiequations
Petrozavodsk Summer 2010. Tavrida NU Contest
73
4065
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
68
4097
1815
Farm in San Andreas
Petrozavodsk Summer 2010. Tavrida NU Contest
66
4440
1859
Last Season of Team.GOV
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
66
4199
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
62
4438
1834
Tennis Racket
Ural Championship 2011
61
4653
1845
Integer-valued Complex Determinant
Petrozavodsk Summer 2010. USU Contest
59
4631
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
53
5072
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
52
5559
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
37
6799
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
36
7335
1853
Laser Technologies
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
32
7597
1840
Victim of Advertising
Ural Championship 2011
28
8695
1897
Alice and Bob and a string
15
5844
Solved problems:
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