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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
17391
19
1820
Ural Steaks
USU Personal Contest 2011
13774
25
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
10967
30
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
6123
54
1837
Isenbaev's Number
Ural Championship 2011
5811
59
1893
A380
NEERC 2011 Eastern Subregional
5627
59
1881
Long problem statement
Ural Regional School Programming Contest 2011
5453
61
1846
GCD 2010
Petrozavodsk Summer 2010. USU Contest
2179
152
1868
Prediction Contest
Ural FU Championship 2011
2136
155
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2102
170
1864
Get-Together at Den's
Ural FU Championship 2011
1919
172
1821
Biathlon
USU Personal Contest 2011
1985
174
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1888
189
1874
Football Goal
Ural Regional School Programming Contest 2011
1700
194
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1680
196
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1555
212
1869
New Year Cruise
Ural FU Championship 2011
1408
234
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1093
300
1826
Minefield
USU Personal Contest 2011
1128
305
1823
Ideal Gas
USU Personal Contest 2011
1011
340
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
912
359
1804
The Machinegunners in a Playoff
NEERC 2010 Eastern Subregional
879
403
1854
Negotiations with Parthians
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
787
418
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
711
459
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
711
459
1860
Fiborial
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
714
460
1828
Approximation by a Progression
USU Personal Contest 2011
730
470
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
594
593
1871
Seismic Waves
Ural FU Championship 2011
530
614
1884
Way to the University
Ural Regional School Programming Contest 2011
494
657
1822
Hugo II's War
USU Personal Contest 2011
497
686
1891
Language Ocean
NEERC 2011 Eastern Subregional
466
695
1870
Zinium 2
Ural FU Championship 2011
465
698
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
499
704
1838
Samurai's Stroke
Ural Championship 2011
471
716
1866
Poetic Foot
Ural FU Championship 2011
432
751
1872
Spacious Office
Ural FU Championship 2011
412
786
1896
War Games 2.1
237
883
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
363
887
1825
Ifrit Bomber 2
USU Personal Contest 2011
367
922
1830
Help in the RNOS
Ural Championship 2011
358
936
1832
Arirang Show
Ural Championship 2011
356
941
1875
Angry Birds
Ural Regional School Programming Contest 2011
332
968
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
346
1007
1861
Graveyard in Deyja
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
320
1010
1817
Merry-go-round
Petrozavodsk Summer 2010. Tavrida NU Contest
335
1018
1824
Ifrit Bomber
USU Personal Contest 2011
317
1063
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
299
1070
1863
Peaceful Atom
Ural FU Championship 2011
297
1081
1836
Babel Fish
Ural Championship 2011
283
1175
1827
Indigenous Wars
USU Personal Contest 2011
285
1178
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
265
1204
1862
Very Wealthy Mole
Ural FU Championship 2011
252
1266
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
246
1302
1857
Alice and Bandersnatch
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
235
1360
1811
Dual-SIM Phone
Petrozavodsk Summer 2010. Tavrida NU Contest
233
1445
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
218
1453
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
216
1463
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
233
1475
1844
Warlord of the Army of Mages
Petrozavodsk Summer 2010. USU Contest
204
1560
1813
Random Shuffler
Petrozavodsk Summer 2010. Tavrida NU Contest
208
1611
1851
GOV-internship
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
181
1745
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
172
1969
1818
Fair Fishermen
Petrozavodsk Summer 2010. Tavrida NU Contest
166
1996
1833
Hopes of Rowing
Ural Championship 2011
161
2014
1886
Trip 2
NEERC 2011 Eastern Subregional
148
2093
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
160
2108
1895
Steaks on Board
NEERC 2011 Eastern Subregional
143
2161
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
144
2167
1831
Tsyfirkin's Lesson
Ural Championship 2011
134
2391
1816
Troubles with Pollard
Petrozavodsk Summer 2010. Tavrida NU Contest
135
2422
1849
Rabbit Hunt 2
Petrozavodsk Summer 2010. USU Contest
123
2509
1852
Cube in a Cube in a Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
121
2544
1839
The Mentaculus
Ural Championship 2011
124
2570
1867
Nanotechnologies
Ural FU Championship 2011
119
2572
1882
Old Nokia
Ural Regional School Programming Contest 2011
110
2760
1850
Space Tourism
Petrozavodsk Summer 2010. USU Contest
110
2781
1812
The Island of Bad Luck 2
Petrozavodsk Summer 2010. Tavrida NU Contest
112
2879
1814
Continued Fraction
Petrozavodsk Summer 2010. Tavrida NU Contest
105
3054
1835
Swamp Doctor
Ural Championship 2011
98
3189
1829
Routing Tables
USU Personal Contest 2011
94
3342
1865
The Island of Märket
Ural FU Championship 2011
88
3385
1856
War and Peace
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
76
3876
1858
Magic Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
76
3876
1859
Last Season of Team.GOV
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
69
4219
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
69
4225
1810
Antiequations
Petrozavodsk Summer 2010. Tavrida NU Contest
73
4232
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
66
4392
1815
Farm in San Andreas
Petrozavodsk Summer 2010. Tavrida NU Contest
69
4446
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
63
4572
1845
Integer-valued Complex Determinant
Petrozavodsk Summer 2010. USU Contest
62
4635
1834
Tennis Racket
Ural Championship 2011
62
4783
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
54
5599
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
45
6068
1897
Alice and Bob and a string
16
6305
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
38
7317
1853
Laser Technologies
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
34
7575
1840
Victim of Advertising
Ural Championship 2011
31
8399
Solved problems:
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