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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
16806
19
1820
Ural Steaks
USU Personal Contest 2011
13332
25
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
10606
30
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
5992
53
1837
Isenbaev's Number
Ural Championship 2011
5596
59
1893
A380
NEERC 2011 Eastern Subregional
5512
57
1881
Long problem statement
Ural Regional School Programming Contest 2011
5333
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
2030
169
1821
Biathlon
USU Personal Contest 2011
1947
170
1864
Get-Together at Den's
Ural FU Championship 2011
1881
168
1874
Football Goal
Ural Regional School Programming Contest 2011
1657
190
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1614
212
1885
Passenger Comfort
NEERC 2011 Eastern Subregional
1599
196
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1527
206
1869
New Year Cruise
Ural FU Championship 2011
1384
227
1826
Minefield
USU Personal Contest 2011
1107
298
1889
Airport Announcements
NEERC 2011 Eastern Subregional
1073
292
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
393
1854
Negotiations with Parthians
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
762
413
1828
Approximation by a Progression
USU Personal Contest 2011
715
460
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
697
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
584
580
1871
Seismic Waves
Ural FU Championship 2011
511
609
1822
Hugo II's War
USU Personal Contest 2011
484
675
1884
Way to the University
Ural Regional School Programming Contest 2011
480
646
1803
The Czechs' Rifles
NEERC 2010 Eastern Subregional
466
723
1838
Samurai's Stroke
Ural Championship 2011
459
704
1870
Zinium 2
Ural FU Championship 2011
458
678
1891
Language Ocean
NEERC 2011 Eastern Subregional
457
677
1866
Poetic Foot
Ural FU Championship 2011
419
739
1872
Spacious Office
Ural FU Championship 2011
401
772
1825
Ifrit Bomber 2
USU Personal Contest 2011
361
898
1892
Morning in Koltsovo
NEERC 2011 Eastern Subregional
356
863
1830
Help in the RNOS
Ural Championship 2011
355
904
1832
Arirang Show
Ural Championship 2011
347
924
1805
Chapaev and a Cipher Grille
NEERC 2010 Eastern Subregional
344
973
1817
Merry-go-round
Petrozavodsk Summer 2010. Tavrida NU Contest
324
1009
1875
Angry Birds
Ural Regional School Programming Contest 2011
323
951
1861
Graveyard in Deyja
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
315
981
1824
Ifrit Bomber
USU Personal Contest 2011
308
1048
1887
Frequent Flyer Card
NEERC 2011 Eastern Subregional
291
1050
1863
Peaceful Atom
Ural FU Championship 2011
288
1064
1836
Babel Fish
Ural Championship 2011
280
1138
1827
Indigenous Wars
USU Personal Contest 2011
276
1165
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
257
1186
1862
Very Wealthy Mole
Ural FU Championship 2011
247
1234
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
238
1285
1857
Alice and Bandersnatch
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
232
1317
1807
Cartridges for Maxim
NEERC 2010 Eastern Subregional
230
1434
1811
Dual-SIM Phone
Petrozavodsk Summer 2010. Tavrida NU Contest
225
1434
1896
War Games 2.1
215
893
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
214
1413
1813
Random Shuffler
Petrozavodsk Summer 2010. Tavrida NU Contest
202
1590
1894
Non-Flying Weather
NEERC 2011 Eastern Subregional
199
1512
1844
Warlord of the Army of Mages
Petrozavodsk Summer 2010. USU Contest
196
1549
1851
GOV-internship
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
179
1686
1808
Chapaev at the Planet Ocean
NEERC 2010 Eastern Subregional
171
1902
1818
Fair Fishermen
Petrozavodsk Summer 2010. Tavrida NU Contest
160
1982
1802
Cube Puzzle
NEERC 2010 Eastern Subregional
156
2074
1833
Hopes of Rowing
Ural Championship 2011
151
2050
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
144
2072
1886
Trip 2
NEERC 2011 Eastern Subregional
144
2052
1895
Steaks on Board
NEERC 2011 Eastern Subregional
139
2121
1831
Tsyfirkin's Lesson
Ural Championship 2011
133
2308
1816
Troubles with Pollard
Petrozavodsk Summer 2010. Tavrida NU Contest
131
2390
1839
The Mentaculus
Ural Championship 2011
122
2500
1849
Rabbit Hunt 2
Petrozavodsk Summer 2010. USU Contest
120
2455
1852
Cube in a Cube in a Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
120
2452
1867
Nanotechnologies
Ural FU Championship 2011
118
2477
1812
The Island of Bad Luck 2
Petrozavodsk Summer 2010. Tavrida NU Contest
111
2785
1882
Old Nokia
Ural Regional School Programming Contest 2011
107
2706
1850
Space Tourism
Petrozavodsk Summer 2010. USU Contest
103
2824
1814
Continued Fraction
Petrozavodsk Summer 2010. Tavrida NU Contest
100
3064
1835
Swamp Doctor
Ural Championship 2011
95
3143
1829
Routing Tables
USU Personal Contest 2011
93
3236
1865
The Island of Märket
Ural FU Championship 2011
86
3303
1858
Magic Cube
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
75
3749
1856
War and Peace
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
74
3794
1810
Antiequations
Petrozavodsk Summer 2010. Tavrida NU Contest
73
4060
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
68
4092
1815
Farm in San Andreas
Petrozavodsk Summer 2010. Tavrida NU Contest
66
4434
1859
Last Season of Team.GOV
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
65
4249
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
62
4433
1834
Tennis Racket
Ural Championship 2011
61
4648
1845
Integer-valued Complex Determinant
Petrozavodsk Summer 2010. USU Contest
59
4625
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
52
5148
1801
The Revolution Cup
NEERC 2010 Eastern Subregional
51
5644
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
37
6791
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
36
7326
1853
Laser Technologies
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
32
7588
1840
Victim of Advertising
Ural Championship 2011
28
8684
1897
Alice and Bob and a string
15
5824
Solved problems:
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