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Problem set. Volume 2
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ID
Title
Source
Authors
Difficulty
1197
Lonesome Knight
Spring School Contest 2002
17727
28
1100
Final Standings
Tetrahedron Team Online Contest May 2001
11091
44
1110
Power
Bulgarian Online Contest September 2001
9366
52
1196
History Exam
Spring School Contest 2002
9204
53
1149
Sinus Dances
8171
60
1119
Metro
Autumn School Contest 2001
6919
71
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6542
74
1131
Copying
USU Championship 2001
6463
76
1139
City Blocks
NEERC 2001 Central Subregional
6345
77
1146
Maximum Sum
DSAP Vietnam Online Contest November 2001
6187
79
1194
Handshakes
Spring School Contest 2002
6002
82
1180
Stone Game
USU Personal Contest 2002
5609
87
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5606
87
1161
Stripies
NEERC 2001 Northern Subregional
5379
91
1126
Magnetic Storms
USU Championship 2001
5343
91
1104
Don’t Ask Woman about Her Age
Tetrahedron Team Online Contest May 2001
5172
94
1136
Parliament
NEERC 2001 Central Subregional
4936
99
1118
Nontrivial Numbers
Autumn School Contest 2001
4734
103
1192
Ball in a Dream
Spring School Contest 2002
4534
108
1123
Salary
Autumn School Contest 2001
4042
121
1167
Bicolored Horses
Romanian Online Contest December 2001
3609
135
1178
Akbardin’s Roads
USU Personal Contest 2002
3312
148
1142
Relations
DSAP Vietnam Online Contest November 2001
3210
152
1152
False Mirrors
Ural Championship 2001. Round 2
3146
155
1135
Recruits
NEERC 2001 Central Subregional
3031
161
1160
Network
NEERC 2001 Northern Subregional
3028
163
1112
Cover
Bulgarian Online Contest September 2001
2987
163
1102
Strange Dialog
Tetrahedron Team Online Contest May 2001
2891
168
1193
Queue at the Exam
Spring School Contest 2002
2714
180
1155
Troubleduons
Ural Championship 2001. Round 2
2689
182
1114
Boxes
Bulgarian Online Contest September 2001
2558
190
1134
Cards
NEERC 2001 Central Subregional
2512
194
1183
Brackets Sequence
NEERC 2001
2492
197
1157
Young Tiler
Ural Championship 2001. Round 2
2463
198
1138
Integer Percentage
NEERC 2001 Central Subregional
2433
200
1164
Fillword
NEERC 2001 Northern Subregional
2403
203
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2194
222
1162
Currency Exchange
NEERC 2001 Northern Subregional
2139
228
1125
Hopscotch
USU Championship 2001
2090
233
1184
Cable Master
NEERC 2001
2022
242
1191
Catch the thief!
Spring School Contest 2002
1995
245
1150
Page Numbers
Ural Championship 2001. Round 2
1978
246
1122
Game
Autumn School Contest 2001
1975
246
1108
Heritage
Bulgarian Online Contest September 2001
1957
248
1109
Conference
Bulgarian Online Contest September 2001
1955
249
1195
Ouths and Crosses
Spring School Contest 2002
1884
260
1113
Jeep
Bulgarian Online Contest September 2001
1866
260
1117
Hierarchy
Autumn School Contest 2001
1762
276
1179
Numbers in Text
USU Personal Contest 2002
1682
290
1153
Supercomputer
Ural Championship 2001. Round 2
1638
297
1124
Mosaic
USU Championship 2001
1635
297
1185
Wall
NEERC 2001
1627
300
1190
Bar of Chocolate
Spring School Contest 2002
1590
307
1127
Colored Bricks
USU Championship 2001
1527
318
1137
Bus Routes
NEERC 2001 Central Subregional
1493
326
1156
Two Rounds
Ural Championship 2001. Round 2
1492
326
1116
Piecewise Constant Function
Autumn School Contest 2001
1482
328
1176
Hyperchannels
USU Personal Contest 2002
1444
338
1121
Branches
Autumn School Contest 2001
1404
346
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1347
361
1141
RSA Attack
1334
364
1140
Swamp Incident
NEERC 2001 Central Subregional
1294
375
1111
Squares
Bulgarian Online Contest September 2001
1249
388
1128
Partition into Groups
USU Championship 2001
1185
409
1115
Ships
Bulgarian Online Contest September 2001
1165
416
1107
Warehouse Problem
Tetrahedron Team Online Contest May 2001
1149
420
1129
Door Painting
USU Championship 2001
1133
428
1181
Cutting a Painted Polygon
USU Personal Contest 2002
1084
449
1198
Jobbery
1037
488
1189
Pairs of Integers
NEERC 2001
974
500
1103
Pencils and Circles
Tetrahedron Team Online Contest May 2001
965
499
1158
Censored!
NEERC 2001 Northern Subregional
963
504
1182
Team Them Up!
NEERC 2001
941
517
1101
Robot in the Field
Tetrahedron Team Online Contest May 2001
876
549
1172
Ship Routes
Romanian Online Contest December 2001
872
556
1132
Square Root
865
559
1143
Electric Path
DSAP Vietnam Online Contest November 2001
837
578
1186
Chemical Reactions
NEERC 2001
696
696
1174
Weird Permutations
Romanian Online Contest December 2001
678
713
1169
Pairs
Romanian Online Contest December 2001
669
722
1168
Radio Stations
Romanian Online Contest December 2001
662
729
1159
Fence
NEERC 2001 Northern Subregional
644
749
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
641
752
1105
Observers Coloring
Tetrahedron Team Online Contest May 2001
583
820
1154
Mages Contest
Ural Championship 2001. Round 2
545
883
1165
Subnumber
NEERC 2001 Northern Subregional
524
918
1130
Nikifor's Walk
USU Championship 2001
513
935
1175
Strange Sequence
USU Personal Contest 2002
506
952
1151
Radiobeacons
Ural Championship 2001. Round 2
454
1056
1173
Lazy Snail
Romanian Online Contest December 2001
448
1070
1177
Like Comparisons
USU Personal Contest 2002
386
1241
1171
Lost in Space
Romanian Online Contest December 2001
373
1280
1170
Desert
Romanian Online Contest December 2001
321
1481
1148
Building Towers
DSAP Vietnam Online Contest November 2001
273
1730
1144
The Emperor's Riddle
DSAP Vietnam Online Contest November 2001
246
1913
1187
Statistical Trouble
NEERC 2001
230
2049
1188
Library
NEERC 2001
218
2157
1166
Funny Card Game
NEERC 2001 Northern Subregional
132
3535
1199
Mouse
126
3429
1163
Chapaev
NEERC 2001 Northern Subregional
103
4337
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