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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
107478
16
1001
Reverse Root
34391
14
1002
Phone Numbers
Central European Olympiad in Informatics 1999
7034
225
1003
Parity
Central European Olympiad in Informatics 1999
4122
384
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2728
580
1005
Stone Pile
USU Championship 1997
20413
78
1006
Square Frames
USU Championship 1997
1594
989
1007
Code Words
USU Championship 1997
3910
405
1008
Image Encoding
USTU PhysTech Cup 2000
4320
366
1009
K-based Numbers
USU Championship 1997
16764
95
1010
Discrete Function
USTU PhysTech Cup 2000
5374
294
1011
Conductors
USU Championship 1997
6375
248
1012
K-based Numbers. Version 2
8764
180
1013
K-based Numbers. Version 3
1369
197
1014
Product of Digits
USU Local Contest. 1999
16826
94
1015
Test the Difference!
USU Local Contest. 1999
3451
457
1016
Cube on the Walk
USU Local Contest. 1999
1908
824
1017
Staircases
USU Local Contest. 1999
10027
158
1018
Binary Apple Tree
USU Local Contest. 1999
5613
281
1019
Line Painting
USU Local Contest. 1999
3392
465
1020
Rope
Autumn School Contest 2000
15791
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10645
148
1022
Genealogical Tree
Autumn School Contest 2000
11115
142
1023
Buttons
Autumn School Contest 2000
7238
218
1024
Permutations
Autumn School Contest 2000
4893
322
1025
Democracy in Danger
Autumn School Contest 2000
23530
67
1026
Questions and Answers
Autumn School Contest 2000
10109
156
1027
D++ Again
Autumn School Contest 2000
2459
640
1028
Stars
Ural Championship 1999
5925
265
1029
Ministry
Ural Championship 1999
3847
355
1030
Titanic
Ural Championship 1999
1738
901
1031
Railway Tickets
Ural Championship 1999
4006
392
1032
Find a Multiple
Ural Championship 1999
4535
301
1033
Labyrinth
Ural Championship 1999
6638
237
1034
Queens in Peaceful Positions
Ural Championship 1999
1928
812
1035
Cross-stitch
Ural Championship 1999
1141
1365
1036
Lucky Tickets
5154
305
1037
Memory Management
USU Championship 2000
1325
1169
1038
Spell Checker
USU Championship 2000
3184
488
1039
Anniversary Party
USU Championship 2000
4026
387
1040
Airline Company
USU Championship 2000
1545
1003
1041
Nikifor
USU Championship 2000
336
4509
1042
Central Heating
USU Championship 2000
1925
806
1043
Cover an Arc
USU Championship 2000
955
1616
1044
Lucky Tickets. Easy!
USU Championship 2000
12694
123
1045
Funny Game
USU Local Contest. March 2000
2941
522
1046
Geometrical Dreams
USU Local Contest. March 2000
804
1893
1047
Simple Calculations
USU Local Contest. March 2000
5052
305
1048
Superlong Sums
USU Local Contest. March 2000
7651
201
1049
Brave Balloonists
USU Local Contest. March 2000
6175
249
1050
Preparing an Article
USU Local Contest. March 2000
1059
1441
1051
Simple Game on a Grid
USU Local Contest. March 2000
2863
536
1052
Rabbit Hunt
USU Local Contest. March 2000
6447
239
1053
Pinocchio
NEERC 2000 Central Subregional
4465
344
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2387
642
1055
Combinations
NEERC 2000 Central Subregional
3619
424
1056
Centers of the Net
NEERC 2000 Central Subregional
2781
551
1057
Amount of Degrees
NEERC 2000 Central Subregional
2137
716
1058
Chocolate
NEERC 2000 Central Subregional
551
2735
1059
Expression
NEERC 2000 Central Subregional
2256
679
1060
Flip Game
NEERC 2000
3858
376
1061
Buffer Manager
NEERC 2000
2168
669
1062
Triathlon
NEERC 2000
788
1823
1063
Domino Puzzle
NEERC 2000
649
2207
1064
Binary Search
NEERC 2000
2206
657
1065
Frontier
NEERC 2000
1017
1417
1066
Garland
NEERC 2000
2487
583
1067
Disk Tree
NEERC 2000
4059
357
1068
Sum
39656
37
1069
Prufer Code
USU Personal Contest 2001
2749
513
1070
Local Time
USU Personal Contest 2001
2124
663
1071
Nikifor 2
USU Personal Contest 2001
2252
625
1072
Routing
USU Personal Contest 2001
2803
503
1073
Square Country
USU Personal Contest 2001
10057
141
1074
Very Short Problem
USU Personal Contest 2001
661
2108
1075
Thread in a Space
USU Personal Contest 2001
706
1976
1076
Trash
1966
712
1077
Travelling Tours
1279
395
1078
Segments
Winter Mathematical Festival Varna 2001
3924
356
1079
Maximum
Winter Mathematical Festival Varna 2001
12542
112
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7509
186
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
5168
270
1082
Gaby Ivanushka
Spring School Contest 2001
10930
127
1083
Factorials!!!
Spring School Contest 2001
20345
68
1084
Goat in the Garden
Spring School Contest 2001
9206
151
1085
Meeting
Spring School Contest 2001
2199
628
1086
Cryptography
Spring School Contest 2001
12999
107
1087
The Time to Take Stones
Spring School Contest 2001
4993
277
1088
Ilya Murometz
Spring School Contest 2001
1850
746
1089
Verification with the Dictionary
Spring School Contest 2001
1639
841
1090
In the Army Now
USU Local Contest. March 2001
3594
366
1091
Tmutarakan Exams
USU Local Contest. March 2001
2490
527
1092
Transversal
USU Local Contest. March 2001
562
2304
1093
Darts
USU Local Contest. March 2001
651
1994
1094
E-screen
USU Local Contest. March 2001
2826
465
1095
Nikifor 3
USU Local Contest. March 2001
2253
582
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1850
709
1097
Square Country 2
USU Local Contest. March 2001
955
1366
1098
Questions
2256
556
1099
Work Scheduling
1035
1141
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