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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
34427
15
1264
Workdays
Autumn School Contest 2003
23633
21
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14405
34
1225
Flags
NEERC 2002 Central Subregional
13943
35
1263
Elections
Autumn School Contest 2003
11743
43
1243
Divorce of the Seven Dwarfs
USU Personal Contest 2003
10109
49
1296
Hyperjump
Spring School Contest 2004
7716
65
1224
Spiral
NEERC 2002 Central Subregional
7492
66
1290
Sabotage
Spring School Contest 2004
6347
79
1297
Palindrome
Spring School Contest 2004
6172
81
1203
Scientific Conference
USU Local Contest. March 2002
5988
82
1214
Strange Procedure
Autumn School Contest 2002
4885
101
1228
Array
NEERC 2002 Central Subregional
4629
107
1260
Nudnik Photographer
Autumn School Contest 2003
4510
111
1226
esreveR redrO
NEERC 2002 Central Subregional
4392
112
1283
Dwarf
USU Personal Contest 2004
4279
117
1219
Symbolic Sequence
USU Championship 2002
4163
119
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4004
122
1207
Median on the Plane
USU Local Contest. March 2002
3864
127
1280
Topological Sorting
NEERC 2003 Central Subregional
3514
142
1222
Chernobyl’ Eagles
USU Championship 2002
3499
141
1272
Non-Yekaterinburg Subway
USU Championship 2003
3362
149
1295
Crazy Notions
Spring School Contest 2004
3341
150
1210
Kind Spirits
Autumn School Contest 2002
3029
163
1213
Cockroaches!
Autumn School Contest 2002
2929
168
1242
Werewolf
USU Personal Contest 2003
2763
179
1208
Legendary Teams Contest
USU Local Contest. March 2002
2304
212
1249
Ancient Necropolis
USU Local Contest. March 2003
2291
216
1298
Knight
Spring School Contest 2004
2167
231
1204
Idempotents
USU Local Contest. March 2002
2148
227
1247
Check a Sequence
USU Personal Contest 2003
2076
238
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2068
236
1244
Gentlemen
USU Personal Contest 2003
1943
254
1200
Horns and Hoofs
USU Local Contest. March 2002
1925
254
1220
Stacks
USU Championship 2002
1791
275
1255
Graveyard of the Cosa Nostra
USU Local Contest. March 2003
1789
276
1223
Chernobyl’ Eagle on a Roof
USU Championship 2002
1667
295
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1647
298
1227
Rally Championship
NEERC 2002 Central Subregional
1642
300
1294
Mars Satellites
Spring School Contest 2004
1605
312
1211
Collective Guarantee
Autumn School Contest 2002
1592
309
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1533
321
1261
Tips
Autumn School Contest 2003
1502
331
1246
Tethered Dog
USU Personal Contest 2003
1490
331
1282
Game Tree
NEERC 2003 Central Subregional
1482
336
1201
Which Day Is It?
USU Local Contest. March 2002
1357
359
1292
Mars Space Stations
Spring School Contest 2004
1326
377
1287
Mars Canals
USU Personal Contest 2004
1319
379
1229
Strong Brickwork
NEERC 2002 Central Subregional
1297
379
1291
Gear-wheels
Spring School Contest 2004
1296
385
1262
Pseudo-Roman Number
Autumn School Contest 2003
1283
387
1259
How to Become Star?
Autumn School Contest 2003
1264
393
1289
One Way Ticket
USU Personal Contest 2004
1259
396
1252
Sorting the Tombstones
USU Local Contest. March 2003
1236
399
1217
Unlucky Tickets
USU Championship 2002
1202
408
1258
Pool
Autumn School Contest 2003
1194
416
1279
Warehouse
NEERC 2003 Central Subregional
1182
421
1238
Folding
NEERC 2002
1173
419
1221
Malevich Strikes Back!
USU Championship 2002
1164
421
1202
Rectangles Travel
USU Local Contest. March 2002
1106
440
1273
Tie
USU Championship 2003
1074
462
1212
Battleship
Autumn School Contest 2002
1007
486
1236
Decoding Task
NEERC 2002
995
493
1254
Die Hard
USU Local Contest. March 2003
770
638
1248
Sequence Sum
USU Personal Contest 2003
740
663
1286
Starship Travel
USU Personal Contest 2004
739
672
1234
Bricks
NEERC 2002
721
678
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
710
696
1253
Necrologues
USU Local Contest. March 2003
700
700
1250
Sea Burial
USU Local Contest. March 2003
677
724
1276
Train
NEERC 2003 Central Subregional
675
732
1268
Little Chu
USU Championship 2003
672
735
1230
Introspective Program
NEERC 2002 Central Subregional
645
756
1235
Cricket Field
NEERC 2002
644
758
1277
Cops and Thieves
NEERC 2003 Central Subregional
626
788
1269
Obscene Words Filter
USU Championship 2003
581
848
1233
Amusing Numbers
NEERC 2002
513
948
1245
Pictures
USU Personal Contest 2003
512
952
1278
“… Connecting People”
NEERC 2003 Central Subregional
501
981
1237
Evacuation Plan
NEERC 2002
499
975
1281
River Basin
NEERC 2003 Central Subregional
349
1396
1240
Heroes of Might and Magic
NEERC 2002
341
1412
1266
Kirchhoff's Law
USU Championship 2003
335
1452
1251
Cemetery Manager
USU Local Contest. March 2003
322
1498
1299
Psylonians
Spring School Contest 2004
320
1525
1265
Mirror
USU Championship 2003
316
1537
1285
Thread in a Hyperspace
USU Personal Contest 2004
299
1628
1241
Inlay Cutters
NEERC 2002
284
1687
1267
Yekaterinburg Subway
USU Championship 2003
280
1728
1257
Hyphenation
Autumn School Contest 2003
279
1733
1216
Two Pawns and One King
USU Championship 2002
231
2053
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
222
2133
1256
Cemetery Guard
USU Local Contest. March 2003
210
2260
1288
Astrolocation
USU Personal Contest 2004
206
2329
1284
Space Poker
USU Personal Contest 2004
204
2351
1232
Asteroid Landing
NEERC 2002 Central Subregional
202
2335
1270
Unicube
USU Championship 2003
202
2363
1275
Knights of the Round Table
NEERC 2003 Central Subregional
199
2398
1239
Ghost Busters
NEERC 2002
152
3059
1271
Sailing Directions
USU Championship 2003
97
4683
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