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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
16812
19
1820
Ural Steaks
USU Personal Contest 2011
13340
25
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
10610
30
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
5994
53
1893
A380
NEERC 2011 Eastern Subregional
5514
57
1837
Isenbaev's Number
Ural Championship 2011
5598
59
1881
Long problem statement
Ural Regional School Programming Contest 2011
5336
59
1868
Prediction Contest
Ural FU Championship 2011
2104
150
1846
GCD 2010
Petrozavodsk Summer 2010. USU Contest
2101
151
1864
Get-Together at Den's
Ural FU Championship 2011
1881
168
1800
Murphy's Law
NEERC 2010 Eastern Subregional
2031
169
1821
Biathlon
USU Personal Contest 2011
1947
170
1874
Football Goal
Ural Regional School Programming Contest 2011
1657
190
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1600
196
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1527
206
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1651
207
1869
New Year Cruise
Ural FU Championship 2011
1385
227
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1073
292
1826
Minefield
USU Personal Contest 2011
1108
298
1823
Ideal Gas
USU Personal Contest 2011
991
333
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
885
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
762
413
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
697
447
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
694
449
1860
Fiborial
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
694
453
1828
Approximation by a Progression
USU Personal Contest 2011
715
460
1809
Chapaev and Potatoes
NEERC 2010 Eastern Subregional
584
580
1871
Seismic Waves
Ural FU Championship 2011
511
609
1884
Way to the University
Ural Regional School Programming Contest 2011
480
646
1822
Hugo II's War
USU Personal Contest 2011
485
674
1891
Language Ocean
NEERC 2011 Eastern Subregional
457
677
1870
Zinium 2
Ural FU Championship 2011
458
678
1838
Samurai's Stroke
Ural Championship 2011
459
704
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
466
724
1866
Poetic Foot
Ural FU Championship 2011
419
740
1872
Spacious Office
Ural FU Championship 2011
401
772
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
356
864
1896
War Games 2.1
215
894
1825
Ifrit Bomber 2
USU Personal Contest 2011
361
899
1830
Help in the RNOS
Ural Championship 2011
355
905
1832
Arirang Show
Ural Championship 2011
347
925
1875
Angry Birds
Ural Regional School Programming Contest 2011
323
951
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
344
973
1861
Graveyard in Deyja
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
315
981
1817
Merry-go-round
Petrozavodsk Summer 2010. Tavrida NU Contest
324
1010
1824
Ifrit Bomber
USU Personal Contest 2011
308
1049
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
291
1050
1863
Peaceful Atom
Ural FU Championship 2011
288
1065
1836
Babel Fish
Ural Championship 2011
280
1138
1827
Indigenous Wars
USU Personal Contest 2011
276
1166
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
258
1182
1862
Very Wealthy Mole
Ural FU Championship 2011
247
1234
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
238
1286
1857
Alice and Bandersnatch
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
232
1318
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
214
1414
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
230
1435
1811
Dual-SIM Phone
Petrozavodsk Summer 2010. Tavrida NU Contest
225
1435
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
199
1513
1844
Warlord of the Army of Mages
Petrozavodsk Summer 2010. USU Contest
196
1550
1813
Random Shuffler
Petrozavodsk Summer 2010. Tavrida NU Contest
202
1590
1851
GOV-internship
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
179
1687
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
171
1903
1818
Fair Fishermen
Petrozavodsk Summer 2010. Tavrida NU Contest
160
1983
1833
Hopes of Rowing
Ural Championship 2011
151
2051
1886
Trip 2
NEERC 2011 Eastern Subregional
144
2053
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
144
2073
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
156
2075
1895
Steaks on Board
NEERC 2011 Eastern Subregional
139
2122
1831
Tsyfirkin's Lesson
Ural Championship 2011
133
2309
1816
Troubles with Pollard
Petrozavodsk Summer 2010. Tavrida NU Contest
131
2391
1852
Cube in a Cube in a Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
120
2453
1849
Rabbit Hunt 2
Petrozavodsk Summer 2010. USU Contest
120
2456
1867
Nanotechnologies
Ural FU Championship 2011
118
2479
1839
The Mentaculus
Ural Championship 2011
122
2501
1882
Old Nokia
Ural Regional School Programming Contest 2011
107
2707
1812
The Island of Bad Luck 2
Petrozavodsk Summer 2010. Tavrida NU Contest
111
2787
1850
Space Tourism
Petrozavodsk Summer 2010. USU Contest
103
2826
1814
Continued Fraction
Petrozavodsk Summer 2010. Tavrida NU Contest
100
3065
1835
Swamp Doctor
Ural Championship 2011
96
3115
1829
Routing Tables
USU Personal Contest 2011
93
3237
1865
The Island of Märket
Ural FU Championship 2011
86
3305
1858
Magic Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
75
3751
1856
War and Peace
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
74
3796
1810
Antiequations
Petrozavodsk Summer 2010. Tavrida NU Contest
73
4062
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
68
4094
1859
Last Season of Team.GOV
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
66
4195
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
62
4435
1815
Farm in San Andreas
Petrozavodsk Summer 2010. Tavrida NU Contest
66
4437
1845
Integer-valued Complex Determinant
Petrozavodsk Summer 2010. USU Contest
59
4628
1834
Tennis Racket
Ural Championship 2011
61
4650
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
52
5150
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
52
5555
1897
Alice and Bob and a string
15
5832
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
37
6794
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
36
7330
1853
Laser Technologies
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
32
7591
1840
Victim of Advertising
Ural Championship 2011
28
8688
Solved problems:
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