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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
107016
16
1001
Reverse Root
34158
14
1002
Phone Numbers
Central European Olympiad in Informatics 1999
6978
225
1003
Parity
Central European Olympiad in Informatics 1999
4079
386
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2709
580
1005
Stone Pile
USU Championship 1997
20174
78
1006
Square Frames
USU Championship 1997
1584
988
1007
Code Words
USU Championship 1997
3891
404
1008
Image Encoding
USTU PhysTech Cup 2000
4278
367
1009
K-based Numbers
USU Championship 1997
16688
94
1010
Discrete Function
USTU PhysTech Cup 2000
5359
293
1011
Conductors
USU Championship 1997
6355
247
1012
K-based Numbers. Version 2
8730
180
1013
K-based Numbers. Version 3
1347
196
1014
Product of Digits
USU Local Contest. 1999
16764
94
1015
Test the Difference!
USU Local Contest. 1999
3439
455
1016
Cube on the Walk
USU Local Contest. 1999
1897
823
1017
Staircases
USU Local Contest. 1999
9961
157
1018
Binary Apple Tree
USU Local Contest. 1999
5588
280
1019
Line Painting
USU Local Contest. 1999
3375
464
1020
Rope
Autumn School Contest 2000
15735
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10620
147
1022
Genealogical Tree
Autumn School Contest 2000
11047
142
1023
Buttons
Autumn School Contest 2000
7221
217
1024
Permutations
Autumn School Contest 2000
4875
321
1025
Democracy in Danger
Autumn School Contest 2000
23409
67
1026
Questions and Answers
Autumn School Contest 2000
10050
156
1027
D++ Again
Autumn School Contest 2000
2450
637
1028
Stars
Ural Championship 1999
5906
264
1029
Ministry
Ural Championship 1999
3827
354
1030
Titanic
Ural Championship 1999
1731
898
1031
Railway Tickets
Ural Championship 1999
3995
390
1032
Find a Multiple
Ural Championship 1999
4516
300
1033
Labyrinth
Ural Championship 1999
6592
237
1034
Queens in Peaceful Positions
Ural Championship 1999
1917
811
1035
Cross-stitch
Ural Championship 1999
1129
1369
1036
Lucky Tickets
5122
305
1037
Memory Management
USU Championship 2000
1310
1173
1038
Spell Checker
USU Championship 2000
3171
487
1039
Anniversary Party
USU Championship 2000
4006
386
1040
Airline Company
USU Championship 2000
1538
1000
1041
Nikifor
USU Championship 2000
320
4693
1042
Central Heating
USU Championship 2000
1903
810
1043
Cover an Arc
USU Championship 2000
937
1635
1044
Lucky Tickets. Easy!
USU Championship 2000
12651
122
1045
Funny Game
USU Local Contest. March 2000
2922
522
1046
Geometrical Dreams
USU Local Contest. March 2000
799
1891
1047
Simple Calculations
USU Local Contest. March 2000
5037
303
1048
Superlong Sums
USU Local Contest. March 2000
7621
200
1049
Brave Balloonists
USU Local Contest. March 2000
6143
249
1050
Preparing an Article
USU Local Contest. March 2000
1051
1442
1051
Simple Game on a Grid
USU Local Contest. March 2000
2855
534
1052
Rabbit Hunt
USU Local Contest. March 2000
6424
238
1053
Pinocchio
NEERC 2000 Central Subregional
4447
343
1054
Tower of Hanoi
NEERC 2000 Central Subregional
2365
643
1055
Combinations
NEERC 2000 Central Subregional
3606
422
1056
Centers of the Net
NEERC 2000 Central Subregional
2763
551
1057
Amount of Degrees
NEERC 2000 Central Subregional
2121
716
1058
Chocolate
NEERC 2000 Central Subregional
539
2774
1059
Expression
NEERC 2000 Central Subregional
2246
677
1060
Flip Game
NEERC 2000
3848
375
1061
Buffer Manager
NEERC 2000
2160
666
1062
Triathlon
NEERC 2000
779
1831
1063
Domino Puzzle
NEERC 2000
644
2208
1064
Binary Search
NEERC 2000
2193
656
1065
Frontier
NEERC 2000
1013
1413
1066
Garland
NEERC 2000
2481
580
1067
Disk Tree
NEERC 2000
3963
363
1068
Sum
39525
37
1069
Prufer Code
USU Personal Contest 2001
2708
517
1070
Local Time
USU Personal Contest 2001
2115
661
1071
Nikifor 2
USU Personal Contest 2001
2241
624
1072
Routing
USU Personal Contest 2001
2790
502
1073
Square Country
USU Personal Contest 2001
10008
140
1074
Very Short Problem
USU Personal Contest 2001
655
2112
1075
Thread in a Space
USU Personal Contest 2001
695
1992
1076
Trash
1954
711
1077
Travelling Tours
1269
395
1078
Segments
Winter Mathematical Festival Varna 2001
3911
354
1079
Maximum
Winter Mathematical Festival Varna 2001
12493
111
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7296
190
1081
Binary Lexicographic Sequence
Winter Mathematical Festival Varna 2001
5151
269
1082
Gaby Ivanushka
Spring School Contest 2001
10910
126
1083
Factorials!!!
Spring School Contest 2001
20263
68
1084
Goat in the Garden
Spring School Contest 2001
9172
150
1085
Meeting
Spring School Contest 2001
2194
625
1086
Cryptography
Spring School Contest 2001
12947
106
1087
The Time to Take Stones
Spring School Contest 2001
4977
276
1088
Ilya Murometz
Spring School Contest 2001
1825
751
1089
Verification with the Dictionary
Spring School Contest 2001
1629
840
1090
In the Army Now
USU Local Contest. March 2001
3570
366
1091
Tmutarakan Exams
USU Local Contest. March 2001
2482
525
1092
Transversal
USU Local Contest. March 2001
554
2320
1093
Darts
USU Local Contest. March 2001
643
2004
1094
E-screen
USU Local Contest. March 2001
2820
462
1095
Nikifor 3
USU Local Contest. March 2001
2248
580
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1839
708
1097
Square Country 2
USU Local Contest. March 2001
950
1363
1098
Questions
2244
555
1099
Work Scheduling
1022
1147
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