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Problem set. Volume 2
Solved problems:
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ID
Title
Source
Authors
Difficulty
1197
Lonesome Knight
Spring School Contest 2002
17725
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
6918
71
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6541
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
6188
79
1194
Handshakes
Spring School Contest 2002
6001
82
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5605
87
1180
Stone Game
USU Personal Contest 2002
5610
87
1126
Magnetic Storms
USU Championship 2001
5342
91
1161
Stripies
NEERC 2001 Northern Subregional
5378
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
4043
121
1167
Bicolored Horses
Romanian Online Contest December 2001
3609
135
1178
Akbardin’s Roads
USU Personal Contest 2002
3313
148
1142
Relations
DSAP Vietnam Online Contest November 2001
3211
152
1152
False Mirrors
Ural Championship 2001. Round 2
3147
155
1135
Recruits
NEERC 2001 Central Subregional
3032
161
1112
Cover
Bulgarian Online Contest September 2001
2988
163
1160
Network
NEERC 2001 Northern Subregional
3023
164
1102
Strange Dialog
Tetrahedron Team Online Contest May 2001
2891
168
1193
Queue at the Exam
Spring School Contest 2002
2715
180
1155
Troubleduons
Ural Championship 2001. Round 2
2689
182
1114
Boxes
Bulgarian Online Contest September 2001
2559
190
1134
Cards
NEERC 2001 Central Subregional
2513
194
1183
Brackets Sequence
NEERC 2001
2493
196
1157
Young Tiler
Ural Championship 2001. Round 2
2464
198
1138
Integer Percentage
NEERC 2001 Central Subregional
2434
200
1164
Fillword
NEERC 2001 Northern Subregional
2404
203
1133
Fibonacci Sequence
NEERC 2001 Central Subregional
2195
222
1162
Currency Exchange
NEERC 2001 Northern Subregional
2136
228
1125
Hopscotch
USU Championship 2001
2091
233
1184
Cable Master
NEERC 2001
2022
242
1191
Catch the thief!
Spring School Contest 2002
1996
245
1122
Game
Autumn School Contest 2001
1976
246
1150
Page Numbers
Ural Championship 2001. Round 2
1979
246
1108
Heritage
Bulgarian Online Contest September 2001
1958
248
1109
Conference
Bulgarian Online Contest September 2001
1956
249
1195
Ouths and Crosses
Spring School Contest 2002
1885
259
1113
Jeep
Bulgarian Online Contest September 2001
1867
260
1117
Hierarchy
Autumn School Contest 2001
1763
276
1179
Numbers in Text
USU Personal Contest 2002
1683
290
1124
Mosaic
USU Championship 2001
1636
297
1153
Supercomputer
Ural Championship 2001. Round 2
1639
297
1185
Wall
NEERC 2001
1626
300
1190
Bar of Chocolate
Spring School Contest 2002
1591
307
1127
Colored Bricks
USU Championship 2001
1528
318
1137
Bus Routes
NEERC 2001 Central Subregional
1493
326
1156
Two Rounds
Ural Championship 2001. Round 2
1493
326
1116
Piecewise Constant Function
Autumn School Contest 2001
1483
327
1176
Hyperchannels
USU Personal Contest 2002
1445
338
1121
Branches
Autumn School Contest 2001
1405
345
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1348
361
1141
RSA Attack
1335
364
1140
Swamp Incident
NEERC 2001 Central Subregional
1295
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
415
1107
Warehouse Problem
Tetrahedron Team Online Contest May 2001
1150
419
1129
Door Painting
USU Championship 2001
1134
428
1181
Cutting a Painted Polygon
USU Personal Contest 2002
1085
449
1198
Jobbery
1038
488
1103
Pencils and Circles
Tetrahedron Team Online Contest May 2001
966
498
1189
Pairs of Integers
NEERC 2001
975
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
873
555
1132
Square Root
865
559
1143
Electric Path
DSAP Vietnam Online Contest November 2001
838
577
1186
Chemical Reactions
NEERC 2001
697
695
1174
Weird Permutations
Romanian Online Contest December 2001
679
711
1169
Pairs
Romanian Online Contest December 2001
670
721
1168
Radio Stations
Romanian Online Contest December 2001
663
728
1159
Fence
NEERC 2001 Northern Subregional
645
748
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
642
751
1105
Observers Coloring
Tetrahedron Team Online Contest May 2001
584
819
1154
Mages Contest
Ural Championship 2001. Round 2
546
881
1165
Subnumber
NEERC 2001 Northern Subregional
525
916
1130
Nikifor's Walk
USU Championship 2001
514
933
1175
Strange Sequence
USU Personal Contest 2002
507
950
1151
Radiobeacons
Ural Championship 2001. Round 2
455
1054
1173
Lazy Snail
Romanian Online Contest December 2001
449
1068
1177
Like Comparisons
USU Personal Contest 2002
386
1241
1171
Lost in Space
Romanian Online Contest December 2001
374
1276
1170
Desert
Romanian Online Contest December 2001
322
1476
1148
Building Towers
DSAP Vietnam Online Contest November 2001
274
1724
1144
The Emperor's Riddle
DSAP Vietnam Online Contest November 2001
247
1905
1187
Statistical Trouble
NEERC 2001
231
2040
1188
Library
NEERC 2001
219
2147
1199
Mouse
127
3404
1166
Funny Card Game
NEERC 2001 Northern Subregional
133
3510
1163
Chapaev
NEERC 2001 Northern Subregional
104
4298
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