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Problem set. Volume 2
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ID
Title
Source
Authors
Difficulty
1197
Lonesome Knight
Spring School Contest 2002
17708
28
1100
Final Standings
Tetrahedron Team Online Contest May 2001
11079
44
1110
Power
Bulgarian Online Contest September 2001
9356
52
1196
History Exam
Spring School Contest 2002
9195
53
1149
Sinus Dances
8167
60
1119
Metro
Autumn School Contest 2001
6914
71
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6538
74
1131
Copying
USU Championship 2001
6457
76
1139
City Blocks
NEERC 2001 Central Subregional
6343
77
1146
Maximum Sum
DSAP Vietnam Online Contest November 2001
6183
79
1194
Handshakes
Spring School Contest 2002
5999
82
1180
Stone Game
USU Personal Contest 2002
5607
87
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5602
87
1161
Stripies
NEERC 2001 Northern Subregional
5377
91
1126
Magnetic Storms
USU Championship 2001
5339
91
1104
Don’t Ask Woman about Her Age
Tetrahedron Team Online Contest May 2001
5169
94
1136
Parliament
NEERC 2001 Central Subregional
4934
99
1118
Nontrivial Numbers
Autumn School Contest 2001
4734
103
1192
Ball in a Dream
Spring School Contest 2002
4531
108
1123
Salary
Autumn School Contest 2001
4041
121
1167
Bicolored Horses
Romanian Online Contest December 2001
3607
135
1178
Akbardin’s Roads
USU Personal Contest 2002
3312
148
1142
Relations
DSAP Vietnam Online Contest November 2001
3211
152
1152
False Mirrors
Ural Championship 2001. Round 2
3141
155
1135
Recruits
NEERC 2001 Central Subregional
3032
161
1160
Network
NEERC 2001 Northern Subregional
3014
164
1112
Cover
Bulgarian Online Contest September 2001
2988
163
1102
Strange Dialog
Tetrahedron Team Online Contest May 2001
2890
168
1193
Queue at the Exam
Spring School Contest 2002
2715
180
1155
Troubleduons
Ural Championship 2001. Round 2
2682
182
1114
Boxes
Bulgarian Online Contest September 2001
2559
190
1134
Cards
NEERC 2001 Central Subregional
2513
194
1183
Brackets Sequence
NEERC 2001
2491
196
1157
Young Tiler
Ural Championship 2001. Round 2
2462
198
1138
Integer Percentage
NEERC 2001 Central Subregional
2432
200
1164
Fillword
NEERC 2001 Northern Subregional
2401
203
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2193
222
1162
Currency Exchange
NEERC 2001 Northern Subregional
2129
229
1125
Hopscotch
USU Championship 2001
2091
233
1184
Cable Master
NEERC 2001
2022
242
1191
Catch the thief!
Spring School Contest 2002
1996
245
1150
Page Numbers
Ural Championship 2001. Round 2
1978
246
1122
Game
Autumn School Contest 2001
1976
246
1108
Heritage
Bulgarian Online Contest September 2001
1958
248
1109
Conference
Bulgarian Online Contest September 2001
1956
248
1195
Ouths and Crosses
Spring School Contest 2002
1884
259
1113
Jeep
Bulgarian Online Contest September 2001
1865
260
1117
Hierarchy
Autumn School Contest 2001
1763
276
1179
Numbers in Text
USU Personal Contest 2002
1683
290
1153
Supercomputer
Ural Championship 2001. Round 2
1639
297
1124
Mosaic
USU Championship 2001
1636
297
1185
Wall
NEERC 2001
1619
302
1190
Bar of Chocolate
Spring School Contest 2002
1591
307
1127
Colored Bricks
USU Championship 2001
1527
318
1137
Bus Routes
NEERC 2001 Central Subregional
1491
326
1156
Two Rounds
Ural Championship 2001. Round 2
1491
326
1116
Piecewise Constant Function
Autumn School Contest 2001
1483
327
1176
Hyperchannels
USU Personal Contest 2002
1442
338
1121
Branches
Autumn School Contest 2001
1404
345
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1346
361
1141
RSA Attack
1335
364
1140
Swamp Incident
NEERC 2001 Central Subregional
1295
375
1111
Squares
Bulgarian Online Contest September 2001
1246
389
1128
Partition into Groups
USU Championship 2001
1183
410
1115
Ships
Bulgarian Online Contest September 2001
1166
415
1107
Warehouse Problem
Tetrahedron Team Online Contest May 2001
1150
419
1129
Door Painting
USU Championship 2001
1134
427
1181
Cutting a Painted Polygon
USU Personal Contest 2002
1085
448
1198
Jobbery
1038
487
1189
Pairs of Integers
NEERC 2001
973
500
1103
Pencils and Circles
Tetrahedron Team Online Contest May 2001
964
499
1158
Censored!
NEERC 2001 Northern Subregional
964
503
1182
Team Them Up!
NEERC 2001
942
516
1101
Robot in the Field
Tetrahedron Team Online Contest May 2001
876
549
1172
Ship Routes
Romanian Online Contest December 2001
872
555
1132
Square Root
865
559
1143
Electric Path
DSAP Vietnam Online Contest November 2001
837
578
1186
Chemical Reactions
NEERC 2001
697
695
1174
Weird Permutations
Romanian Online Contest December 2001
679
711
1169
Pairs
Romanian Online Contest December 2001
669
721
1168
Radio Stations
Romanian Online Contest December 2001
661
730
1159
Fence
NEERC 2001 Northern Subregional
644
749
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
642
750
1105
Observers Coloring
Tetrahedron Team Online Contest May 2001
584
818
1154
Mages Contest
Ural Championship 2001. Round 2
545
882
1165
Subnumber
NEERC 2001 Northern Subregional
525
915
1130
Nikifor's Walk
USU Championship 2001
513
935
1175
Strange Sequence
USU Personal Contest 2002
507
950
1151
Radiobeacons
Ural Championship 2001. Round 2
455
1053
1173
Lazy Snail
Romanian Online Contest December 2001
449
1067
1177
Like Comparisons
USU Personal Contest 2002
386
1240
1171
Lost in Space
Romanian Online Contest December 2001
374
1275
1170
Desert
Romanian Online Contest December 2001
322
1475
1148
Building Towers
DSAP Vietnam Online Contest November 2001
274
1723
1144
The Emperor's Riddle
DSAP Vietnam Online Contest November 2001
247
1904
1187
Statistical Trouble
NEERC 2001
231
2038
1188
Library
NEERC 2001
219
2145
1166
Funny Card Game
NEERC 2001 Northern Subregional
133
3507
1199
Mouse
127
3401
1163
Chapaev
NEERC 2001 Northern Subregional
104
4295
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