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Problem set. Volume 2
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ID
Title
Source
Authors
Difficulty
1197
Lonesome Knight
Spring School Contest 2002
17733
28
1100
Final Standings
Tetrahedron Team Online Contest May 2001
11092
44
1110
Power
Bulgarian Online Contest September 2001
9367
52
1196
History Exam
Spring School Contest 2002
9205
53
1149
Sinus Dances
8172
60
1119
Metro
Autumn School Contest 2001
6925
71
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6543
74
1131
Copying
USU Championship 2001
6464
76
1139
City Blocks
NEERC 2001 Central Subregional
6345
77
1146
Maximum Sum
DSAP Vietnam Online Contest November 2001
6190
79
1194
Handshakes
Spring School Contest 2002
6003
82
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5608
87
1180
Stone Game
USU Personal Contest 2002
5611
87
1126
Magnetic Storms
USU Championship 2001
5346
91
1161
Stripies
NEERC 2001 Northern Subregional
5380
91
1104
Don’t Ask Woman about Her Age
Tetrahedron Team Online Contest May 2001
5174
94
1136
Parliament
NEERC 2001 Central Subregional
4938
99
1118
Nontrivial Numbers
Autumn School Contest 2001
4734
103
1192
Ball in a Dream
Spring School Contest 2002
4537
108
1123
Salary
Autumn School Contest 2001
4042
121
1167
Bicolored Horses
Romanian Online Contest December 2001
3610
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
3147
155
1160
Network
NEERC 2001 Northern Subregional
3203
155
1135
Recruits
NEERC 2001 Central Subregional
3032
161
1112
Cover
Bulgarian Online Contest September 2001
2988
163
1102
Strange Dialog
Tetrahedron Team Online Contest May 2001
2892
168
1193
Queue at the Exam
Spring School Contest 2002
2715
180
1155
Troubleduons
Ural Championship 2001. Round 2
2693
181
1114
Boxes
Bulgarian Online Contest September 2001
2559
190
1134
Cards
NEERC 2001 Central Subregional
2512
194
1183
Brackets Sequence
NEERC 2001
2492
197
1157
Young Tiler
Ural Championship 2001. Round 2
2465
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
2182
224
1125
Hopscotch
USU Championship 2001
2090
233
1184
Cable Master
NEERC 2001
2022
242
1191
Catch the thief!
Spring School Contest 2002
1996
245
1122
Game
Autumn School Contest 2001
1975
246
1150
Page Numbers
Ural Championship 2001. Round 2
1978
247
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
261
1117
Hierarchy
Autumn School Contest 2001
1763
276
1179
Numbers in Text
USU Personal Contest 2002
1682
290
1124
Mosaic
USU Championship 2001
1635
297
1153
Supercomputer
Ural Championship 2001. Round 2
1638
297
1185
Wall
NEERC 2001
1628
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
1446
338
1121
Branches
Autumn School Contest 2001
1404
346
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1348
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
1186
409
1115
Ships
Bulgarian Online Contest September 2001
1166
416
1107
Warehouse Problem
Tetrahedron Team Online Contest May 2001
1149
420
1129
Door Painting
USU Championship 2001
1134
428
1181
Cutting a Painted Polygon
USU Personal Contest 2002
1084
449
1198
Jobbery
1037
488
1103
Pencils and Circles
Tetrahedron Team Online Contest May 2001
965
499
1189
Pairs of Integers
NEERC 2001
974
500
1158
Censored!
NEERC 2001 Northern Subregional
964
503
1182
Team Them Up!
NEERC 2001
943
516
1101
Robot in the Field
Tetrahedron Team Online Contest May 2001
877
549
1172
Ship Routes
Romanian Online Contest December 2001
873
555
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
730
1159
Fence
NEERC 2001 Northern Subregional
644
750
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
641
752
1105
Observers Coloring
Tetrahedron Team Online Contest May 2001
583
821
1154
Mages Contest
Ural Championship 2001. Round 2
547
880
1165
Subnumber
NEERC 2001 Northern Subregional
524
918
1130
Nikifor's Walk
USU Championship 2001
513
936
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
1071
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
1731
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
1199
Mouse
126
3430
1166
Funny Card Game
NEERC 2001 Northern Subregional
132
3535
1163
Chapaev
NEERC 2001 Northern Subregional
103
4338
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