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Problem set. Volume 1
Solved problems:
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Volume 2
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ID
Title
Source
Authors
Difficulty
1000
A+B Problem
105584
16
1001
Reverse Root
33239
14
1002
Phone Numbers
Central European Olympiad in Informatics 1999
6890
224
1003
Parity
Central European Olympiad in Informatics 1999
4016
385
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2660
581
1005
Stone Pile
USU Championship 1997
19734
78
1006
Square Frames
USU Championship 1997
1575
977
1007
Code Words
USU Championship 1997
3859
400
1008
Image Encoding
USTU PhysTech Cup 2000
4247
364
1009
K-based Numbers
USU Championship 1997
16472
94
1010
Discrete Function
USTU PhysTech Cup 2000
5327
290
1011
Conductors
USU Championship 1997
6278
246
1012
K-based Numbers. Version 2
8654
178
1013
K-based Numbers. Version 3
1296
194
1014
Product of Digits
USU Local Contest. 1999
16480
94
1015
Test the Difference!
USU Local Contest. 1999
3412
451
1016
Cube on the Walk
USU Local Contest. 1999
1883
815
1017
Staircases
USU Local Contest. 1999
9853
157
1018
Binary Apple Tree
USU Local Contest. 1999
5537
278
1019
Line Painting
USU Local Contest. 1999
3339
461
1020
Rope
Autumn School Contest 2000
15559
99
1021
Sacrament of the Sum
Autumn School Contest 2000
10504
147
1022
Genealogical Tree
Autumn School Contest 2000
10923
141
1023
Buttons
Autumn School Contest 2000
7166
215
1024
Permutations
Autumn School Contest 2000
4843
318
1025
Democracy in Danger
Autumn School Contest 2000
23112
67
1026
Questions and Answers
Autumn School Contest 2000
9852
156
1027
D++ Again
Autumn School Contest 2000
2438
630
1028
Stars
Ural Championship 1999
5812
264
1029
Ministry
Ural Championship 1999
3789
352
1030
Titanic
Ural Championship 1999
1717
890
1031
Railway Tickets
Ural Championship 1999
3978
385
1032
Find a Multiple
Ural Championship 1999
4450
300
1033
Labyrinth
Ural Championship 1999
6531
235
1034
Queens in Peaceful Positions
Ural Championship 1999
1896
806
1035
Cross-stitch
Ural Championship 1999
1120
1357
1036
Lucky Tickets
5066
303
1037
Memory Management
USU Championship 2000
1286
1175
1038
Spell Checker
USU Championship 2000
3146
482
1039
Anniversary Party
USU Championship 2000
3963
383
1040
Airline Company
USU Championship 2000
1511
1001
1041
Nikifor
USU Championship 2000
305
4834
1042
Central Heating
USU Championship 2000
1871
809
1043
Cover an Arc
USU Championship 2000
923
1632
1044
Lucky Tickets. Easy!
USU Championship 2000
12550
121
1045
Funny Game
USU Local Contest. March 2000
2895
518
1046
Geometrical Dreams
USU Local Contest. March 2000
789
1882
1047
Simple Calculations
USU Local Contest. March 2000
5010
300
1048
Superlong Sums
USU Local Contest. March 2000
7529
199
1049
Brave Balloonists
USU Local Contest. March 2000
6079
247
1050
Preparing an Article
USU Local Contest. March 2000
1040
1432
1051
Simple Game on a Grid
USU Local Contest. March 2000
2842
527
1052
Rabbit Hunt
USU Local Contest. March 2000
6367
236
1053
Pinocchio
NEERC 2000 Central Subregional
4419
339
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2337
640
1055
Combinations
NEERC 2000 Central Subregional
3588
417
1056
Centers of the Net
NEERC 2000 Central Subregional
2730
548
1057
Amount of Degrees
NEERC 2000 Central Subregional
2097
712
1058
Chocolate
NEERC 2000 Central Subregional
525
2799
1059
Expression
NEERC 2000 Central Subregional
2223
672
1060
Flip Game
NEERC 2000
3815
372
1061
Buffer Manager
NEERC 2000
2139
661
1062
Triathlon
NEERC 2000
770
1821
1063
Domino Puzzle
NEERC 2000
633
2208
1064
Binary Search
NEERC 2000
2177
650
1065
Frontier
NEERC 2000
1005
1400
1066
Garland
NEERC 2000
2466
574
1067
Disk Tree
NEERC 2000
3860
367
1068
Sum
38882
37
1069
Prufer Code
USU Personal Contest 2001
2658
518
1070
Local Time
USU Personal Contest 2001
2094
656
1071
Nikifor 2
USU Personal Contest 2001
2219
620
1072
Routing
USU Personal Contest 2001
2758
499
1073
Square Country
USU Personal Contest 2001
9845
140
1074
Very Short Problem
USU Personal Contest 2001
646
2105
1075
Thread in a Space
USU Personal Contest 2001
681
1999
1076
Trash
1928
709
1077
Travelling Tours
1245
396
1078
Segments
Winter Mathematical Festival Varna 2001
3875
352
1079
Maximum
Winter Mathematical Festival Varna 2001
12352
111
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7058
193
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
5104
267
1082
Gaby Ivanushka
Spring School Contest 2001
10856
125
1083
Factorials!!!
Spring School Contest 2001
20057
67
1084
Goat in the Garden
Spring School Contest 2001
9054
149
1085
Meeting
Spring School Contest 2001
2169
622
1086
Cryptography
Spring School Contest 2001
12796
106
1087
The Time to Take Stones
Spring School Contest 2001
4936
274
1088
Ilya Murometz
Spring School Contest 2001
1815
742
1089
Verification with the Dictionary
Spring School Contest 2001
1607
838
1090
In the Army Now
USU Local Contest. March 2001
3537
363
1091
Tmutarakan Exams
USU Local Contest. March 2001
2447
524
1092
Transversal
USU Local Contest. March 2001
547
2310
1093
Darts
USU Local Contest. March 2001
639
1983
1094
E-screen
USU Local Contest. March 2001
2803
457
1095
Nikifor 3
USU Local Contest. March 2001
2231
574
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1815
705
1097
Square Country 2
USU Local Contest. March 2001
939
1356
1098
Questions
2224
551
1099
Work Scheduling
1008
1144
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