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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
107508
16
1001
Reverse Root
34415
14
1002
Phone Numbers
Central European Olympiad in Informatics 1999
7037
225
1003
Parity
Central European Olympiad in Informatics 1999
4123
385
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2731
580
1005
Stone Pile
USU Championship 1997
20421
78
1006
Square Frames
USU Championship 1997
1594
990
1007
Code Words
USU Championship 1997
3910
405
1008
Image Encoding
USTU PhysTech Cup 2000
4320
367
1009
K-based Numbers
USU Championship 1997
16769
95
1010
Discrete Function
USTU PhysTech Cup 2000
5374
295
1011
Conductors
USU Championship 1997
6377
248
1012
K-based Numbers. Version 2
8770
180
1013
K-based Numbers. Version 3
1371
197
1014
Product of Digits
USU Local Contest. 1999
16829
94
1015
Test the Difference!
USU Local Contest. 1999
3452
457
1016
Cube on the Walk
USU Local Contest. 1999
1908
825
1017
Staircases
USU Local Contest. 1999
10034
158
1018
Binary Apple Tree
USU Local Contest. 1999
5615
281
1019
Line Painting
USU Local Contest. 1999
3394
465
1020
Rope
Autumn School Contest 2000
15797
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10649
148
1022
Genealogical Tree
Autumn School Contest 2000
11119
142
1023
Buttons
Autumn School Contest 2000
7240
218
1024
Permutations
Autumn School Contest 2000
4893
322
1025
Democracy in Danger
Autumn School Contest 2000
23538
67
1026
Questions and Answers
Autumn School Contest 2000
10115
156
1027
D++ Again
Autumn School Contest 2000
2459
640
1028
Stars
Ural Championship 1999
5928
265
1029
Ministry
Ural Championship 1999
3850
355
1030
Titanic
Ural Championship 1999
1738
902
1031
Railway Tickets
Ural Championship 1999
4007
392
1032
Find a Multiple
Ural Championship 1999
4536
302
1033
Labyrinth
Ural Championship 1999
6640
237
1034
Queens in Peaceful Positions
Ural Championship 1999
1929
813
1035
Cross-stitch
Ural Championship 1999
1141
1366
1036
Lucky Tickets
5157
305
1037
Memory Management
USU Championship 2000
1326
1169
1038
Spell Checker
USU Championship 2000
3186
489
1039
Anniversary Party
USU Championship 2000
4027
387
1040
Airline Company
USU Championship 2000
1545
1004
1041
Nikifor
USU Championship 2000
337
4499
1042
Central Heating
USU Championship 2000
1925
807
1043
Cover an Arc
USU Championship 2000
955
1618
1044
Lucky Tickets. Easy!
USU Championship 2000
12696
123
1045
Funny Game
USU Local Contest. March 2000
2942
523
1046
Geometrical Dreams
USU Local Contest. March 2000
804
1894
1047
Simple Calculations
USU Local Contest. March 2000
5052
305
1048
Superlong Sums
USU Local Contest. March 2000
7652
201
1049
Brave Balloonists
USU Local Contest. March 2000
6181
249
1050
Preparing an Article
USU Local Contest. March 2000
1059
1443
1051
Simple Game on a Grid
USU Local Contest. March 2000
2864
537
1052
Rabbit Hunt
USU Local Contest. March 2000
6448
239
1053
Pinocchio
NEERC 2000 Central Subregional
4466
344
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2388
642
1055
Combinations
NEERC 2000 Central Subregional
3619
424
1056
Centers of the Net
NEERC 2000 Central Subregional
2782
551
1057
Amount of Degrees
NEERC 2000 Central Subregional
2137
717
1058
Chocolate
NEERC 2000 Central Subregional
552
2732
1059
Expression
NEERC 2000 Central Subregional
2256
679
1060
Flip Game
NEERC 2000
3858
377
1061
Buffer Manager
NEERC 2000
2169
669
1062
Triathlon
NEERC 2000
789
1822
1063
Domino Puzzle
NEERC 2000
649
2209
1064
Binary Search
NEERC 2000
2206
658
1065
Frontier
NEERC 2000
1017
1419
1066
Garland
NEERC 2000
2487
583
1067
Disk Tree
NEERC 2000
4060
358
1068
Sum
39665
37
1069
Prufer Code
USU Personal Contest 2001
2751
513
1070
Local Time
USU Personal Contest 2001
2124
664
1071
Nikifor 2
USU Personal Contest 2001
2254
625
1072
Routing
USU Personal Contest 2001
2804
503
1073
Square Country
USU Personal Contest 2001
10065
141
1074
Very Short Problem
USU Personal Contest 2001
662
2107
1075
Thread in a Space
USU Personal Contest 2001
706
1977
1076
Trash
1966
713
1077
Travelling Tours
1279
395
1078
Segments
Winter Mathematical Festival Varna 2001
3927
356
1079
Maximum
Winter Mathematical Festival Varna 2001
12553
111
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7510
186
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
5168
271
1082
Gaby Ivanushka
Spring School Contest 2001
10931
127
1083
Factorials!!!
Spring School Contest 2001
20349
68
1084
Goat in the Garden
Spring School Contest 2001
9207
151
1085
Meeting
Spring School Contest 2001
2199
629
1086
Cryptography
Spring School Contest 2001
13002
107
1087
The Time to Take Stones
Spring School Contest 2001
4994
277
1088
Ilya Murometz
Spring School Contest 2001
1850
746
1089
Verification with the Dictionary
Spring School Contest 2001
1641
841
1090
In the Army Now
USU Local Contest. March 2001
3596
366
1091
Tmutarakan Exams
USU Local Contest. March 2001
2490
528
1092
Transversal
USU Local Contest. March 2001
562
2306
1093
Darts
USU Local Contest. March 2001
651
1996
1094
E-screen
USU Local Contest. March 2001
2826
465
1095
Nikifor 3
USU Local Contest. March 2001
2253
583
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1850
709
1097
Square Country 2
USU Local Contest. March 2001
955
1367
1098
Questions
2256
556
1099
Work Scheduling
1037
1140
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