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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
34522
15
1264
Workdays
Autumn School Contest 2003
23700
21
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14447
34
1225
Flags
NEERC 2002 Central Subregional
13973
35
1263
Elections
Autumn School Contest 2003
11769
43
1243
Divorce of the Seven Dwarfs
USU Personal Contest 2003
10130
49
1296
Hyperjump
Spring School Contest 2004
7750
65
1224
Spiral
NEERC 2002 Central Subregional
7504
66
1290
Sabotage
Spring School Contest 2004
6357
79
1297
Palindrome
Spring School Contest 2004
6180
82
1203
Scientific Conference
USU Local Contest. March 2002
6005
82
1214
Strange Procedure
Autumn School Contest 2002
4891
101
1228
Array
NEERC 2002 Central Subregional
4633
107
1260
Nudnik Photographer
Autumn School Contest 2003
4530
111
1226
esreveR redrO
NEERC 2002 Central Subregional
4393
113
1283
Dwarf
USU Personal Contest 2004
4278
118
1219
Symbolic Sequence
USU Championship 2002
4172
119
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4008
122
1207
Median on the Plane
USU Local Contest. March 2002
3915
125
1280
Topological Sorting
NEERC 2003 Central Subregional
3537
142
1222
Chernobyl’ Eagles
USU Championship 2002
3500
141
1272
Non-Yekaterinburg Subway
USU Championship 2003
3387
148
1295
Crazy Notions
Spring School Contest 2004
3343
150
1210
Kind Spirits
Autumn School Contest 2002
3035
163
1213
Cockroaches!
Autumn School Contest 2002
2933
168
1242
Werewolf
USU Personal Contest 2003
2787
178
1208
Legendary Teams Contest
USU Local Contest. March 2002
2314
212
1249
Ancient Necropolis
USU Local Contest. March 2003
2296
216
1298
Knight
Spring School Contest 2004
2167
232
1204
Idempotents
USU Local Contest. March 2002
2149
228
1247
Check a Sequence
USU Personal Contest 2003
2078
239
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2070
237
1244
Gentlemen
USU Personal Contest 2003
1946
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
1789
277
1223
Chernobyl’ Eagle on a Roof
USU Championship 2002
1672
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
1608
312
1211
Collective Guarantee
Autumn School Contest 2002
1593
309
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
1329
377
1287
Mars Canals
USU Personal Contest 2004
1322
379
1291
Gear-wheels
Spring School Contest 2004
1302
385
1229
Strong Brickwork
NEERC 2002 Central Subregional
1299
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
409
1258
Pool
Autumn School Contest 2003
1195
417
1279
Warehouse
NEERC 2003 Central Subregional
1183
421
1238
Folding
NEERC 2002
1177
419
1221
Malevich Strikes Back!
USU Championship 2002
1166
422
1202
Rectangles Travel
USU Local Contest. March 2002
1107
441
1273
Tie
USU Championship 2003
1076
462
1212
Battleship
Autumn School Contest 2002
1008
487
1236
Decoding Task
NEERC 2002
1000
492
1254
Die Hard
USU Local Contest. March 2003
770
639
1286
Starship Travel
USU Personal Contest 2004
755
659
1248
Sequence Sum
USU Personal Contest 2003
741
663
1234
Bricks
NEERC 2002
723
678
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
712
696
1253
Necrologues
USU Local Contest. March 2003
703
699
1250
Sea Burial
USU Local Contest. March 2003
677
726
1276
Train
NEERC 2003 Central Subregional
675
734
1268
Little Chu
USU Championship 2003
672
736
1230
Introspective Program
NEERC 2002 Central Subregional
645
758
1235
Cricket Field
NEERC 2002
643
761
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
950
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
1404
1240
Heroes of Might and Magic
NEERC 2002
340
1419
1266
Kirchhoff's Law
USU Championship 2003
334
1460
1251
Cemetery Manager
USU Local Contest. March 2003
322
1501
1299
Psylonians
Spring School Contest 2004
319
1533
1265
Mirror
USU Championship 2003
316
1541
1285
Thread in a Hyperspace
USU Personal Contest 2004
299
1632
1241
Inlay Cutters
NEERC 2002
283
1697
1267
Yekaterinburg Subway
USU Championship 2003
279
1738
1257
Hyphenation
Autumn School Contest 2003
278
1743
1216
Two Pawns and One King
USU Championship 2002
230
2067
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
221
2148
1256
Cemetery Guard
USU Local Contest. March 2003
209
2276
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
2380
1275
Knights of the Round Table
NEERC 2003 Central Subregional
199
2404
1239
Ghost Busters
NEERC 2002
151
3086
1271
Sailing Directions
USU Championship 2003
97
4694
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