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Problem set. Volume 1
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Volume 2
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ID
Title
Source
Authors
Difficulty
1000
A+B Problem
105692
16
1001
Reverse Root
33274
14
1002
Phone Numbers
Central European Olympiad in Informatics 1999
6892
225
1003
Parity
Central European Olympiad in Informatics 1999
4019
385
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2663
581
1005
Stone Pile
USU Championship 1997
19847
78
1006
Square Frames
USU Championship 1997
1575
978
1007
Code Words
USU Championship 1997
3861
400
1008
Image Encoding
USTU PhysTech Cup 2000
4248
364
1009
K-based Numbers
USU Championship 1997
16491
94
1010
Discrete Function
USTU PhysTech Cup 2000
5330
290
1011
Conductors
USU Championship 1997
6279
246
1012
K-based Numbers. Version 2
8659
178
1013
K-based Numbers. Version 3
1301
194
1014
Product of Digits
USU Local Contest. 1999
16492
94
1015
Test the Difference!
USU Local Contest. 1999
3414
451
1016
Cube on the Walk
USU Local Contest. 1999
1883
816
1017
Staircases
USU Local Contest. 1999
9860
157
1018
Binary Apple Tree
USU Local Contest. 1999
5540
278
1019
Line Painting
USU Local Contest. 1999
3348
460
1020
Rope
Autumn School Contest 2000
15571
99
1021
Sacrament of the Sum
Autumn School Contest 2000
10505
147
1022
Genealogical Tree
Autumn School Contest 2000
10926
141
1023
Buttons
Autumn School Contest 2000
7177
215
1024
Permutations
Autumn School Contest 2000
4844
318
1025
Democracy in Danger
Autumn School Contest 2000
23129
67
1026
Questions and Answers
Autumn School Contest 2000
9854
156
1027
D++ Again
Autumn School Contest 2000
2439
630
1028
Stars
Ural Championship 1999
5813
264
1029
Ministry
Ural Championship 1999
3790
352
1030
Titanic
Ural Championship 1999
1718
890
1031
Railway Tickets
Ural Championship 1999
3980
385
1032
Find a Multiple
Ural Championship 1999
4452
300
1033
Labyrinth
Ural Championship 1999
6535
235
1034
Queens in Peaceful Positions
Ural Championship 1999
1896
807
1035
Cross-stitch
Ural Championship 1999
1120
1358
1036
Lucky Tickets
5067
303
1037
Memory Management
USU Championship 2000
1290
1172
1038
Spell Checker
USU Championship 2000
3150
482
1039
Anniversary Party
USU Championship 2000
3967
383
1040
Airline Company
USU Championship 2000
1514
1000
1041
Nikifor
USU Championship 2000
306
4823
1042
Central Heating
USU Championship 2000
1874
809
1043
Cover an Arc
USU Championship 2000
924
1632
1044
Lucky Tickets. Easy!
USU Championship 2000
12554
121
1045
Funny Game
USU Local Contest. March 2000
2898
518
1046
Geometrical Dreams
USU Local Contest. March 2000
789
1884
1047
Simple Calculations
USU Local Contest. March 2000
5011
300
1048
Superlong Sums
USU Local Contest. March 2000
7532
199
1049
Brave Balloonists
USU Local Contest. March 2000
6082
247
1050
Preparing an Article
USU Local Contest. March 2000
1040
1434
1051
Simple Game on a Grid
USU Local Contest. March 2000
2844
527
1052
Rabbit Hunt
USU Local Contest. March 2000
6368
236
1053
Pinocchio
NEERC 2000 Central Subregional
4420
339
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2343
639
1055
Combinations
NEERC 2000 Central Subregional
3589
417
1056
Centers of the Net
NEERC 2000 Central Subregional
2734
548
1057
Amount of Degrees
NEERC 2000 Central Subregional
2098
713
1058
Chocolate
NEERC 2000 Central Subregional
526
2797
1059
Expression
NEERC 2000 Central Subregional
2226
672
1060
Flip Game
NEERC 2000
3818
372
1061
Buffer Manager
NEERC 2000
2140
662
1062
Triathlon
NEERC 2000
770
1823
1063
Domino Puzzle
NEERC 2000
633
2210
1064
Binary Search
NEERC 2000
2177
650
1065
Frontier
NEERC 2000
1005
1401
1066
Garland
NEERC 2000
2467
574
1067
Disk Tree
NEERC 2000
3878
366
1068
Sum
38902
37
1069
Prufer Code
USU Personal Contest 2001
2670
516
1070
Local Time
USU Personal Contest 2001
2095
657
1071
Nikifor 2
USU Personal Contest 2001
2219
620
1072
Routing
USU Personal Contest 2001
2759
499
1073
Square Country
USU Personal Contest 2001
9853
140
1074
Very Short Problem
USU Personal Contest 2001
648
2101
1075
Thread in a Space
USU Personal Contest 2001
681
2000
1076
Trash
1934
707
1077
Travelling Tours
1246
396
1078
Segments
Winter Mathematical Festival Varna 2001
3877
352
1079
Maximum
Winter Mathematical Festival Varna 2001
12356
111
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7094
192
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
5104
267
1082
Gaby Ivanushka
Spring School Contest 2001
10859
125
1083
Factorials!!!
Spring School Contest 2001
20070
68
1084
Goat in the Garden
Spring School Contest 2001
9057
150
1085
Meeting
Spring School Contest 2001
2170
622
1086
Cryptography
Spring School Contest 2001
12815
106
1087
The Time to Take Stones
Spring School Contest 2001
4936
274
1088
Ilya Murometz
Spring School Contest 2001
1815
743
1089
Verification with the Dictionary
Spring School Contest 2001
1613
835
1090
In the Army Now
USU Local Contest. March 2001
3539
363
1091
Tmutarakan Exams
USU Local Contest. March 2001
2451
523
1092
Transversal
USU Local Contest. March 2001
547
2312
1093
Darts
USU Local Contest. March 2001
639
1985
1094
E-screen
USU Local Contest. March 2001
2808
457
1095
Nikifor 3
USU Local Contest. March 2001
2232
575
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1816
705
1097
Square Country 2
USU Local Contest. March 2001
939
1357
1098
Questions
2225
551
1099
Work Scheduling
1008
1145
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