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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
94079
16
1001
Reverse Root
28838
15
1002
Phone Numbers
Central European Olympiad in Informatics 1999
6469
218
1003
Parity
Central European Olympiad in Informatics 1999
3718
380
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2504
563
1005
Stone Pile
USU Championship 1997
16390
86
1006
Square Frames
USU Championship 1997
1517
925
1007
Code Words
USU Championship 1997
3697
381
1008
Image Encoding
USTU PhysTech Cup 2000
4069
346
1009
K-based Numbers
USU Championship 1997
15016
94
1010
Discrete Function
USTU PhysTech Cup 2000
5120
275
1011
Conductors
USU Championship 1997
5959
237
1012
K-based Numbers. Version 2
8138
173
1013
K-based Numbers. Version 3
1006
188
1014
Product of Digits
USU Local Contest. 1999
14369
98
1015
Test the Difference!
USU Local Contest. 1999
3288
427
1016
Cube on the Walk
USU Local Contest. 1999
1805
776
1017
Staircases
USU Local Contest. 1999
9102
155
1018
Binary Apple Tree
USU Local Contest. 1999
4882
288
1019
Line Painting
USU Local Contest. 1999
3190
440
1020
Rope
Autumn School Contest 2000
14100
100
1021
Sacrament of the Sum
Autumn School Contest 2000
9866
142
1022
Genealogical Tree
Autumn School Contest 2000
10193
138
1023
Buttons
Autumn School Contest 2000
6844
205
1024
Permutations
Autumn School Contest 2000
4620
304
1025
Democracy in Danger
Autumn School Contest 2000
20854
67
1026
Questions and Answers
Autumn School Contest 2000
8989
156
1027
D++ Again
Autumn School Contest 2000
2387
587
1028
Stars
Ural Championship 1999
5392
260
1029
Ministry
Ural Championship 1999
3590
339
1030
Titanic
Ural Championship 1999
1661
839
1031
Railway Tickets
Ural Championship 1999
3785
370
1032
Find a Multiple
Ural Championship 1999
4115
296
1033
Labyrinth
Ural Championship 1999
6105
229
1034
Queens in Peaceful Positions
Ural Championship 1999
1837
759
1035
Cross-stitch
Ural Championship 1999
1054
1315
1036
Lucky Tickets
4717
297
1037
Memory Management
USU Championship 2000
1187
1161
1038
Spell Checker
USU Championship 2000
3032
457
1039
Anniversary Party
USU Championship 2000
3698
375
1040
Airline Company
USU Championship 2000
1421
971
1041
Nikifor
USU Championship 2000
648
2112
1042
Central Heating
USU Championship 2000
1733
797
1043
Cover an Arc
USU Championship 2000
868
1583
1044
Lucky Tickets. Easy!
USU Championship 2000
11616
120
1045
Funny Game
USU Local Contest. March 2000
2704
506
1046
Geometrical Dreams
USU Local Contest. March 2000
745
1818
1047
Simple Calculations
USU Local Contest. March 2000
4537
302
1048
Superlong Sums
USU Local Contest. March 2000
7161
191
1049
Brave Balloonists
USU Local Contest. March 2000
5727
239
1050
Preparing an Article
USU Local Contest. March 2000
997
1363
1051
Simple Game on a Grid
USU Local Contest. March 2000
2745
498
1052
Rabbit Hunt
USU Local Contest. March 2000
6071
226
1053
Pinocchio
NEERC 2000 Central Subregional
4261
321
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2089
653
1055
Combinations
NEERC 2000 Central Subregional
3429
398
1056
Computer Net
NEERC 2000 Central Subregional
2578
529
1057
Amount of Degrees
NEERC 2000 Central Subregional
1950
699
1058
Chocolate
NEERC 2000 Central Subregional
473
2831
1059
Expression
NEERC 2000 Central Subregional
2150
634
1060
Flip Game
NEERC 2000
3651
355
1061
Buffer Manager
NEERC 2000
2079
621
1062
Triathlon
NEERC 2000
710
1802
1063
Domino Puzzle
NEERC 2000
596
2140
1064
Binary Search
NEERC 2000
2090
618
1065
Frontier
NEERC 2000
941
1365
1066
Garland
NEERC 2000
2350
550
1067
Disk Tree
NEERC 2000
2469
523
1068
Sum
34364
38
1069
Prufer Code
USU Personal Contest 2001
2439
515
1070
Local Time
USU Personal Contest 2001
1993
630
1071
Nikifor 2
USU Personal Contest 2001
2117
593
1072
Routing
USU Personal Contest 2001
2594
484
1073
Square Country
USU Personal Contest 2001
8426
150
1074
Very Short Problem
USU Personal Contest 2001
602
2061
1075
Thread in a Space
USU Personal Contest 2001
608
2041
1076
Trash
1851
674
1077
Travelling Tours
1133
398
1078
Segments
Winter Mathematical Festival Varna 2001
3355
371
1079
Maximum
Winter Mathematical Festival Varna 2001
11404
109
1080
Map Coloring
Winter Mathematical Festival Varna 2001
5161
241
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
4842
257
1082
Gaby Ivanushka
Spring School Contest 2001
10331
120
1083
Factorials!!!
Spring School Contest 2001
18140
68
1084
Goat in the Garden
Spring School Contest 2001
8421
147
1085
Meeting
Spring School Contest 2001
2062
597
1086
Cryptography
Spring School Contest 2001
11470
108
1087
The Time to Take Stones
Spring School Contest 2001
4454
277
1088
Ilya Murometz
Spring School Contest 2001
1754
701
1089
Verification with a Vocabulary
Spring School Contest 2001
2686
459
1090
In the Army Now
USU Local Contest. March 2001
3370
348
1091
Tmutarakan Exams
USU Local Contest. March 2001
2287
512
1092
Transversal
USU Local Contest. March 2001
520
2219
1093
Darts
USU Local Contest. March 2001
598
1934
1094
E-screen
USU Local Contest. March 2001
2692
435
1095
Nikifor 3
USU Local Contest. March 2001
2112
554
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1714
682
1097
Square Country 2
USU Local Contest. March 2001
858
1355
1098
Questions
2123
527
1099
Work Scheduling
917
1148
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