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Problem set. Volume 3
Solved problems:
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ID
Title
Source
Authors
Difficulty
1293
Eniya
Spring School Contest 2004
34498
15
1264
Workdays
Autumn School Contest 2003
23679
21
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14436
34
1225
Flags
NEERC 2002 Central Subregional
13970
35
1263
Elections
Autumn School Contest 2003
11765
43
1243
Divorce of the Seven Dwarfs
USU Personal Contest 2003
10125
49
1296
Hyperjump
Spring School Contest 2004
7743
65
1224
Spiral
NEERC 2002 Central Subregional
7501
66
1290
Sabotage
Spring School Contest 2004
6357
79
1297
Palindrome
Spring School Contest 2004
6178
81
1203
Scientific Conference
USU Local Contest. March 2002
6001
82
1214
Strange Procedure
Autumn School Contest 2002
4889
101
1228
Array
NEERC 2002 Central Subregional
4632
107
1260
Nudnik Photographer
Autumn School Contest 2003
4514
111
1226
esreveR redrO
NEERC 2002 Central Subregional
4393
113
1283
Dwarf
USU Personal Contest 2004
4278
118
1219
Symbolic Sequence
USU Championship 2002
4170
119
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4007
122
1207
Median on the Plane
USU Local Contest. March 2002
3910
125
1280
Topological Sorting
NEERC 2003 Central Subregional
3536
142
1222
Chernobyl’ Eagles
USU Championship 2002
3500
141
1272
Non-Yekaterinburg Subway
USU Championship 2003
3374
148
1295
Crazy Notions
Spring School Contest 2004
3342
150
1210
Kind Spirits
Autumn School Contest 2002
3030
163
1213
Cockroaches!
Autumn School Contest 2002
2931
169
1242
Werewolf
USU Personal Contest 2003
2786
178
1208
Legendary Teams Contest
USU Local Contest. March 2002
2310
212
1249
Ancient Necropolis
USU Local Contest. March 2003
2294
216
1298
Knight
Spring School Contest 2004
2166
232
1204
Idempotents
USU Local Contest. March 2002
2148
228
1247
Check a Sequence
USU Personal Contest 2003
2078
239
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2069
237
1244
Gentlemen
USU Personal Contest 2003
1945
255
1200
Horns and Hoofs
USU Local Contest. March 2002
1925
254
1220
Stacks
USU Championship 2002
1792
275
1255
Graveyard of the Cosa Nostra
USU Local Contest. March 2003
1788
277
1223
Chernobyl’ Eagle on a Roof
USU Championship 2002
1670
295
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1651
298
1227
Rally Championship
NEERC 2002 Central Subregional
1648
299
1294
Mars Satellites
Spring School Contest 2004
1607
312
1211
Collective Guarantee
Autumn School Contest 2002
1591
310
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1536
321
1261
Tips
Autumn School Contest 2003
1507
331
1246
Tethered Dog
USU Personal Contest 2003
1495
331
1282
Game Tree
NEERC 2003 Central Subregional
1486
336
1201
Which Day Is It?
USU Local Contest. March 2002
1360
359
1292
Mars Space Stations
Spring School Contest 2004
1328
377
1287
Mars Canals
USU Personal Contest 2004
1321
379
1291
Gear-wheels
Spring School Contest 2004
1300
385
1229
Strong Brickwork
NEERC 2002 Central Subregional
1298
379
1262
Pseudo-Roman Number
Autumn School Contest 2003
1286
387
1259
How to Become Star?
Autumn School Contest 2003
1268
393
1289
One Way Ticket
USU Personal Contest 2004
1262
396
1252
Sorting the Tombstones
USU Local Contest. March 2003
1238
399
1217
Unlucky Tickets
USU Championship 2002
1204
408
1258
Pool
Autumn School Contest 2003
1195
416
1279
Warehouse
NEERC 2003 Central Subregional
1183
421
1238
Folding
NEERC 2002
1175
419
1221
Malevich Strikes Back!
USU Championship 2002
1165
422
1202
Rectangles Travel
USU Local Contest. March 2002
1107
440
1273
Tie
USU Championship 2003
1076
462
1212
Battleship
Autumn School Contest 2002
1008
487
1236
Decoding Task
NEERC 2002
998
493
1254
Die Hard
USU Local Contest. March 2003
769
640
1286
Starship Travel
USU Personal Contest 2004
755
659
1248
Sequence Sum
USU Personal Contest 2003
741
663
1234
Bricks
NEERC 2002
723
677
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
709
699
1253
Necrologues
USU Local Contest. March 2003
703
699
1250
Sea Burial
USU Local Contest. March 2003
677
725
1276
Train
NEERC 2003 Central Subregional
674
734
1268
Little Chu
USU Championship 2003
671
737
1230
Introspective Program
NEERC 2002 Central Subregional
645
757
1235
Cricket Field
NEERC 2002
643
760
1277
Cops and Thieves
NEERC 2003 Central Subregional
625
791
1269
Obscene Words Filter
USU Championship 2003
580
851
1233
Amusing Numbers
NEERC 2002
513
949
1245
Pictures
USU Personal Contest 2003
511
956
1278
“… Connecting People”
NEERC 2003 Central Subregional
501
983
1237
Evacuation Plan
NEERC 2002
499
977
1281
River Basin
NEERC 2003 Central Subregional
348
1403
1240
Heroes of Might and Magic
NEERC 2002
340
1419
1266
Kirchhoff's Law
USU Championship 2003
334
1459
1251
Cemetery Manager
USU Local Contest. March 2003
322
1501
1299
Psylonians
Spring School Contest 2004
319
1533
1265
Mirror
USU Championship 2003
316
1540
1285
Thread in a Hyperspace
USU Personal Contest 2004
299
1631
1241
Inlay Cutters
NEERC 2002
283
1696
1267
Yekaterinburg Subway
USU Championship 2003
279
1737
1257
Hyphenation
Autumn School Contest 2003
278
1742
1216
Two Pawns and One King
USU Championship 2002
230
2066
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
221
2147
1256
Cemetery Guard
USU Local Contest. March 2003
209
2275
1288
Astrolocation
USU Personal Contest 2004
205
2345
1284
Space Poker
USU Personal Contest 2004
203
2367
1232
Asteroid Landing
NEERC 2002 Central Subregional
201
2351
1270
Unicube
USU Championship 2003
201
2379
1275
Knights of the Round Table
NEERC 2003 Central Subregional
199
2403
1239
Ghost Busters
NEERC 2002
151
3084
1271
Sailing Directions
USU Championship 2003
97
4692
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