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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
35415
15
1264
Workdays
Autumn School Contest 2003
24333
21
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14753
34
1225
Flags
NEERC 2002 Central Subregional
14319
35
1263
Elections
Autumn School Contest 2003
12005
43
1243
Divorce of the Seven Dwarfs
USU Personal Contest 2003
10342
49
1296
Hyperjump
Spring School Contest 2004
8153
63
1224
Spiral
NEERC 2002 Central Subregional
7645
66
1290
Sabotage
Spring School Contest 2004
6430
80
1297
Palindrome
Spring School Contest 2004
6272
82
1203
Scientific Conference
USU Local Contest. March 2002
6261
80
1214
Strange Procedure
Autumn School Contest 2002
4963
102
1228
Array
NEERC 2002 Central Subregional
4679
108
1260
Nudnik Photographer
Autumn School Contest 2003
4621
111
1226
esreveR redrO
NEERC 2002 Central Subregional
4459
113
1283
Dwarf
USU Personal Contest 2004
4404
117
1219
Symbolic Sequence
USU Championship 2002
4222
120
1207
Median on the Plane
USU Local Contest. March 2002
4160
121
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4055
124
1280
Topological Sorting
NEERC 2003 Central Subregional
3620
141
1222
Chernobyl’ Eagles
USU Championship 2002
3540
143
1272
Non-Yekaterinburg Subway
USU Championship 2003
3479
147
1295
Crazy Notions
Spring School Contest 2004
3403
151
1210
Kind Spirits
Autumn School Contest 2002
3103
163
1213
Cockroaches!
Autumn School Contest 2002
2965
170
1242
Werewolf
USU Personal Contest 2003
2873
177
1208
Legendary Teams Contest
USU Local Contest. March 2002
2350
213
1249
Ancient Necropolis
USU Local Contest. March 2003
2319
219
1298
Knight
Spring School Contest 2004
2201
233
1204
Idempotents
USU Local Contest. March 2002
2181
229
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2111
237
1247
Check a Sequence
USU Personal Contest 2003
2107
240
1244
Gentlemen
USU Personal Contest 2003
1988
255
1200
Horns and Hoofs
USU Local Contest. March 2002
1954
256
1220
Stacks
USU Championship 2002
1816
278
1255
Graveyard of the Cosa Nostra
USU Local Contest. March 2003
1811
280
1223
Chernobyl’ Eagle on a Roof
USU Championship 2002
1713
294
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1675
301
1227
Rally Championship
NEERC 2002 Central Subregional
1671
302
1294
Mars Satellites
Spring School Contest 2004
1624
315
1211
Collective Guarantee
Autumn School Contest 2002
1620
311
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1557
323
1261
Tips
Autumn School Contest 2003
1548
329
1246
Tethered Dog
USU Personal Contest 2003
1512
334
1282
Game Tree
NEERC 2003 Central Subregional
1510
338
1201
Which Day Is It?
USU Local Contest. March 2002
1381
361
1287
Mars Canals
USU Personal Contest 2004
1346
380
1292
Mars Space Stations
Spring School Contest 2004
1345
380
1291
Gear-wheels
Spring School Contest 2004
1329
385
1229
Strong Brickwork
NEERC 2002 Central Subregional
1319
381
1262
Pseudo-Roman Number
Autumn School Contest 2003
1304
390
1259
How to Become Star?
Autumn School Contest 2003
1290
394
1289
One Way Ticket
USU Personal Contest 2004
1278
400
1252
Sorting the Tombstones
USU Local Contest. March 2003
1265
399
1217
Unlucky Tickets
USU Championship 2002
1227
410
1258
Pool
Autumn School Contest 2003
1219
417
1238
Folding
NEERC 2002
1209
417
1279
Warehouse
NEERC 2003 Central Subregional
1202
423
1221
Malevich Strikes Back!
USU Championship 2002
1196
420
1202
Rectangles Travel
USU Local Contest. March 2002
1124
443
1273
Tie
USU Championship 2003
1092
465
1212
Battleship
Autumn School Contest 2002
1022
491
1236
Decoding Task
NEERC 2002
1018
494
1254
Die Hard
USU Local Contest. March 2003
783
642
1286
Starship Travel
USU Personal Contest 2004
770
660
1248
Sequence Sum
USU Personal Contest 2003
756
664
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
736
688
1234
Bricks
NEERC 2002
730
686
1253
Necrologues
USU Local Contest. March 2003
725
693
1268
Little Chu
USU Championship 2003
688
735
1250
Sea Burial
USU Local Contest. March 2003
687
730
1276
Train
NEERC 2003 Central Subregional
686
737
1230
Introspective Program
NEERC 2002 Central Subregional
655
762
1235
Cricket Field
NEERC 2002
652
767
1277
Cops and Thieves
NEERC 2003 Central Subregional
638
792
1269
Obscene Words Filter
USU Championship 2003
598
843
1233
Amusing Numbers
NEERC 2002
537
928
1245
Pictures
USU Personal Contest 2003
521
958
1278
“… Connecting People”
NEERC 2003 Central Subregional
509
988
1237
Evacuation Plan
NEERC 2002
505
986
1281
River Basin
NEERC 2003 Central Subregional
362
1379
1240
Heroes of Might and Magic
NEERC 2002
345
1429
1266
Kirchhoff's Law
USU Championship 2003
342
1457
1251
Cemetery Manager
USU Local Contest. March 2003
330
1497
1299
Psylonians
Spring School Contest 2004
323
1547
1265
Mirror
USU Championship 2003
322
1545
1285
Thread in a Hyperspace
USU Personal Contest 2004
306
1629
1241
Inlay Cutters
NEERC 2002
288
1704
1267
Yekaterinburg Subway
USU Championship 2003
286
1732
1257
Hyphenation
Autumn School Contest 2003
282
1755
1216
Two Pawns and One King
USU Championship 2002
233
2085
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
225
2157
1256
Cemetery Guard
USU Local Contest. March 2003
214
2273
1288
Astrolocation
USU Personal Contest 2004
210
2340
1284
Space Poker
USU Personal Contest 2004
208
2361
1275
Knights of the Round Table
NEERC 2003 Central Subregional
205
2386
1232
Asteroid Landing
NEERC 2002 Central Subregional
204
2368
1270
Unicube
USU Championship 2003
204
2396
1239
Ghost Busters
NEERC 2002
153
3113
1271
Sailing Directions
USU Championship 2003
101
4620
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