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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
107816
16
1001
Reverse Root
34480
14
1002
Phone Numbers
Central European Olympiad in Informatics 1999
7048
225
1003
Parity
Central European Olympiad in Informatics 1999
4131
385
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2734
580
1005
Stone Pile
USU Championship 1997
20445
78
1006
Square Frames
USU Championship 1997
1596
990
1007
Code Words
USU Championship 1997
3913
406
1008
Image Encoding
USTU PhysTech Cup 2000
4327
367
1009
K-based Numbers
USU Championship 1997
16790
95
1010
Discrete Function
USTU PhysTech Cup 2000
5382
295
1011
Conductors
USU Championship 1997
6390
248
1012
K-based Numbers. Version 2
8776
181
1013
K-based Numbers. Version 3
1375
197
1014
Product of Digits
USU Local Contest. 1999
16869
94
1015
Test the Difference!
USU Local Contest. 1999
3454
458
1016
Cube on the Walk
USU Local Contest. 1999
1910
826
1017
Staircases
USU Local Contest. 1999
10045
158
1018
Binary Apple Tree
USU Local Contest. 1999
5623
281
1019
Line Painting
USU Local Contest. 1999
3398
465
1020
Rope
Autumn School Contest 2000
15826
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10661
148
1022
Genealogical Tree
Autumn School Contest 2000
11128
142
1023
Buttons
Autumn School Contest 2000
7247
218
1024
Permutations
Autumn School Contest 2000
4899
323
1025
Democracy in Danger
Autumn School Contest 2000
23566
67
1026
Questions and Answers
Autumn School Contest 2000
10123
156
1027
D++ Again
Autumn School Contest 2000
2462
641
1028
Stars
Ural Championship 1999
5935
266
1029
Ministry
Ural Championship 1999
3855
355
1030
Titanic
Ural Championship 1999
1739
903
1031
Railway Tickets
Ural Championship 1999
4013
392
1032
Find a Multiple
Ural Championship 1999
4543
302
1033
Labyrinth
Ural Championship 1999
6649
237
1034
Queens in Peaceful Positions
Ural Championship 1999
1931
813
1035
Cross-stitch
Ural Championship 1999
1143
1366
1036
Lucky Tickets
5168
305
1037
Memory Management
USU Championship 2000
1328
1169
1038
Spell Checker
USU Championship 2000
3189
489
1039
Anniversary Party
USU Championship 2000
4034
387
1040
Airline Company
USU Championship 2000
1548
1004
1041
Nikifor
USU Championship 2000
339
4482
1042
Central Heating
USU Championship 2000
1927
807
1043
Cover an Arc
USU Championship 2000
957
1617
1044
Lucky Tickets. Easy!
USU Championship 2000
12705
123
1045
Funny Game
USU Local Contest. March 2000
2946
523
1046
Geometrical Dreams
USU Local Contest. March 2000
806
1893
1047
Simple Calculations
USU Local Contest. March 2000
5058
305
1048
Superlong Sums
USU Local Contest. March 2000
7660
201
1049
Brave Balloonists
USU Local Contest. March 2000
6206
249
1050
Preparing an Article
USU Local Contest. March 2000
1060
1444
1051
Simple Game on a Grid
USU Local Contest. March 2000
2868
537
1052
Rabbit Hunt
USU Local Contest. March 2000
6459
239
1053
Pinocchio
NEERC 2000 Central Subregional
4471
344
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2391
642
1055
Combinations
NEERC 2000 Central Subregional
3623
424
1056
Centers of the Net
NEERC 2000 Central Subregional
2785
552
1057
Amount of Degrees
NEERC 2000 Central Subregional
2138
718
1058
Chocolate
NEERC 2000 Central Subregional
556
2718
1059
Expression
NEERC 2000 Central Subregional
2257
680
1060
Flip Game
NEERC 2000
3860
377
1061
Buffer Manager
NEERC 2000
2170
670
1062
Triathlon
NEERC 2000
790
1823
1063
Domino Puzzle
NEERC 2000
651
2206
1064
Binary Search
NEERC 2000
2208
658
1065
Frontier
NEERC 2000
1018
1420
1066
Garland
NEERC 2000
2491
583
1067
Disk Tree
NEERC 2000
4072
357
1068
Sum
39794
37
1069
Prufer Code
USU Personal Contest 2001
2755
513
1070
Local Time
USU Personal Contest 2001
2125
664
1071
Nikifor 2
USU Personal Contest 2001
2256
626
1072
Routing
USU Personal Contest 2001
2805
504
1073
Square Country
USU Personal Contest 2001
10078
141
1074
Very Short Problem
USU Personal Contest 2001
663
2108
1075
Thread in a Space
USU Personal Contest 2001
707
1978
1076
Trash
1969
713
1077
Travelling Tours
1280
396
1078
Segments
Winter Mathematical Festival Varna 2001
3930
356
1079
Maximum
Winter Mathematical Festival Varna 2001
12568
112
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7530
186
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
5174
271
1082
Gaby Ivanushka
Spring School Contest 2001
10938
127
1083
Factorials!!!
Spring School Contest 2001
20370
68
1084
Goat in the Garden
Spring School Contest 2001
9235
150
1085
Meeting
Spring School Contest 2001
2200
629
1086
Cryptography
Spring School Contest 2001
13016
107
1087
The Time to Take Stones
Spring School Contest 2001
4999
278
1088
Ilya Murometz
Spring School Contest 2001
1852
747
1089
Verification with the Dictionary
Spring School Contest 2001
1643
841
1090
In the Army Now
USU Local Contest. March 2001
3602
366
1091
Tmutarakan Exams
USU Local Contest. March 2001
2492
528
1092
Transversal
USU Local Contest. March 2001
564
2302
1093
Darts
USU Local Contest. March 2001
653
1993
1094
E-screen
USU Local Contest. March 2001
2828
466
1095
Nikifor 3
USU Local Contest. March 2001
2256
583
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1851
710
1097
Square Country 2
USU Local Contest. March 2001
957
1367
1098
Questions
2259
557
1099
Work Scheduling
1041
1137
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