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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
107935
16
1001
Reverse Root
34539
14
1002
Phone Numbers
Central European Olympiad in Informatics 1999
7060
225
1003
Parity
Central European Olympiad in Informatics 1999
4143
384
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2740
580
1005
Stone Pile
USU Championship 1997
20480
78
1006
Square Frames
USU Championship 1997
1598
991
1007
Code Words
USU Championship 1997
3918
406
1008
Image Encoding
USTU PhysTech Cup 2000
4330
367
1009
K-based Numbers
USU Championship 1997
16810
95
1010
Discrete Function
USTU PhysTech Cup 2000
5391
295
1011
Conductors
USU Championship 1997
6396
249
1012
K-based Numbers. Version 2
8784
181
1013
K-based Numbers. Version 3
1378
198
1014
Product of Digits
USU Local Contest. 1999
17018
93
1015
Test the Difference!
USU Local Contest. 1999
3459
458
1016
Cube on the Walk
USU Local Contest. 1999
1913
826
1017
Staircases
USU Local Contest. 1999
10064
158
1018
Binary Apple Tree
USU Local Contest. 1999
5632
281
1019
Line Painting
USU Local Contest. 1999
3404
465
1020
Rope
Autumn School Contest 2000
15842
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10673
149
1022
Genealogical Tree
Autumn School Contest 2000
11150
142
1023
Buttons
Autumn School Contest 2000
7261
218
1024
Permutations
Autumn School Contest 2000
4910
322
1025
Democracy in Danger
Autumn School Contest 2000
23590
67
1026
Questions and Answers
Autumn School Contest 2000
10136
156
1027
D++ Again
Autumn School Contest 2000
2466
641
1028
Stars
Ural Championship 1999
5952
265
1029
Ministry
Ural Championship 1999
3862
355
1030
Titanic
Ural Championship 1999
1739
904
1031
Railway Tickets
Ural Championship 1999
4019
393
1032
Find a Multiple
Ural Championship 1999
4553
302
1033
Labyrinth
Ural Championship 1999
6667
237
1034
Queens in Peaceful Positions
Ural Championship 1999
1936
813
1035
Cross-stitch
Ural Championship 1999
1144
1368
1036
Lucky Tickets
5173
305
1037
Memory Management
USU Championship 2000
1329
1170
1038
Spell Checker
USU Championship 2000
3194
489
1039
Anniversary Party
USU Championship 2000
4041
387
1040
Airline Company
USU Championship 2000
1549
1005
1041
Nikifor
USU Championship 2000
341
4464
1042
Central Heating
USU Championship 2000
1931
807
1043
Cover an Arc
USU Championship 2000
958
1619
1044
Lucky Tickets. Easy!
USU Championship 2000
12723
123
1045
Funny Game
USU Local Contest. March 2000
2952
523
1046
Geometrical Dreams
USU Local Contest. March 2000
807
1894
1047
Simple Calculations
USU Local Contest. March 2000
5066
305
1048
Superlong Sums
USU Local Contest. March 2000
7687
201
1049
Brave Balloonists
USU Local Contest. March 2000
6213
249
1050
Preparing an Article
USU Local Contest. March 2000
1062
1444
1051
Simple Game on a Grid
USU Local Contest. March 2000
2872
537
1052
Rabbit Hunt
USU Local Contest. March 2000
6464
239
1053
Pinocchio
NEERC 2000 Central Subregional
4481
344
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2392
643
1055
Combinations
NEERC 2000 Central Subregional
3629
425
1056
Centers of the Net
NEERC 2000 Central Subregional
2787
552
1057
Amount of Degrees
NEERC 2000 Central Subregional
2140
718
1058
Chocolate
NEERC 2000 Central Subregional
559
2708
1059
Expression
NEERC 2000 Central Subregional
2259
681
1060
Flip Game
NEERC 2000
3866
377
1061
Buffer Manager
NEERC 2000
2171
671
1062
Triathlon
NEERC 2000
791
1824
1063
Domino Puzzle
NEERC 2000
652
2207
1064
Binary Search
NEERC 2000
2209
659
1065
Frontier
NEERC 2000
1020
1420
1066
Garland
NEERC 2000
2497
583
1067
Disk Tree
NEERC 2000
4078
357
1068
Sum
39947
37
1069
Prufer Code
USU Personal Contest 2001
2756
514
1070
Local Time
USU Personal Contest 2001
2128
665
1071
Nikifor 2
USU Personal Contest 2001
2259
626
1072
Routing
USU Personal Contest 2001
2808
504
1073
Square Country
USU Personal Contest 2001
10104
141
1074
Very Short Problem
USU Personal Contest 2001
664
2108
1075
Thread in a Space
USU Personal Contest 2001
710
1974
1076
Trash
1971
713
1077
Travelling Tours
1281
396
1078
Segments
Winter Mathematical Festival Varna 2001
3934
356
1079
Maximum
Winter Mathematical Festival Varna 2001
12579
112
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7539
186
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
5182
271
1082
Gaby Ivanushka
Spring School Contest 2001
10946
127
1083
Factorials!!!
Spring School Contest 2001
20394
68
1084
Goat in the Garden
Spring School Contest 2001
9243
151
1085
Meeting
Spring School Contest 2001
2202
630
1086
Cryptography
Spring School Contest 2001
13044
107
1087
The Time to Take Stones
Spring School Contest 2001
5013
277
1088
Ilya Murometz
Spring School Contest 2001
1854
748
1089
Verification with the Dictionary
Spring School Contest 2001
1644
842
1090
In the Army Now
USU Local Contest. March 2001
3606
366
1091
Tmutarakan Exams
USU Local Contest. March 2001
2493
529
1092
Transversal
USU Local Contest. March 2001
565
2302
1093
Darts
USU Local Contest. March 2001
656
1988
1094
E-screen
USU Local Contest. March 2001
2831
466
1095
Nikifor 3
USU Local Contest. March 2001
2257
584
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1853
711
1097
Square Country 2
USU Local Contest. March 2001
958
1368
1098
Questions
2262
557
1099
Work Scheduling
1043
1137
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