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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
34483
15
1264
Workdays
Autumn School Contest 2003
23662
21
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14421
34
1225
Flags
NEERC 2002 Central Subregional
13956
35
1263
Elections
Autumn School Contest 2003
11755
43
1243
Divorce of the Seven Dwarfs
USU Personal Contest 2003
10116
49
1296
Hyperjump
Spring School Contest 2004
7734
65
1224
Spiral
NEERC 2002 Central Subregional
7498
66
1290
Sabotage
Spring School Contest 2004
6354
79
1297
Palindrome
Spring School Contest 2004
6175
81
1203
Scientific Conference
USU Local Contest. March 2002
5994
82
1214
Strange Procedure
Autumn School Contest 2002
4888
101
1228
Array
NEERC 2002 Central Subregional
4632
107
1260
Nudnik Photographer
Autumn School Contest 2003
4513
111
1226
esreveR redrO
NEERC 2002 Central Subregional
4393
113
1283
Dwarf
USU Personal Contest 2004
4279
117
1219
Symbolic Sequence
USU Championship 2002
4167
119
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4006
122
1207
Median on the Plane
USU Local Contest. March 2002
3891
126
1222
Chernobyl’ Eagles
USU Championship 2002
3500
141
1280
Topological Sorting
NEERC 2003 Central Subregional
3517
142
1272
Non-Yekaterinburg Subway
USU Championship 2003
3366
149
1295
Crazy Notions
Spring School Contest 2004
3343
150
1210
Kind Spirits
Autumn School Contest 2002
3031
163
1213
Cockroaches!
Autumn School Contest 2002
2932
168
1242
Werewolf
USU Personal Contest 2003
2786
178
1208
Legendary Teams Contest
USU Local Contest. March 2002
2306
212
1249
Ancient Necropolis
USU Local Contest. March 2003
2294
216
1204
Idempotents
USU Local Contest. March 2002
2149
228
1298
Knight
Spring School Contest 2004
2167
231
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2069
236
1247
Check a Sequence
USU Personal Contest 2003
2079
238
1200
Horns and Hoofs
USU Local Contest. March 2002
1926
254
1244
Gentlemen
USU Personal Contest 2003
1945
255
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
1669
295
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1647
299
1227
Rally Championship
NEERC 2002 Central Subregional
1648
299
1211
Collective Guarantee
Autumn School Contest 2002
1592
309
1294
Mars Satellites
Spring School Contest 2004
1606
312
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1535
321
1246
Tethered Dog
USU Personal Contest 2003
1494
331
1261
Tips
Autumn School Contest 2003
1507
331
1282
Game Tree
NEERC 2003 Central Subregional
1485
336
1201
Which Day Is It?
USU Local Contest. March 2002
1360
359
1292
Mars Space Stations
Spring School Contest 2004
1329
376
1287
Mars Canals
USU Personal Contest 2004
1322
378
1229
Strong Brickwork
NEERC 2002 Central Subregional
1299
379
1291
Gear-wheels
Spring School Contest 2004
1299
385
1262
Pseudo-Roman Number
Autumn School Contest 2003
1285
387
1259
How to Become Star?
Autumn School Contest 2003
1264
394
1289
One Way Ticket
USU Personal Contest 2004
1261
396
1252
Sorting the Tombstones
USU Local Contest. March 2003
1238
399
1217
Unlucky Tickets
USU Championship 2002
1203
408
1258
Pool
Autumn School Contest 2003
1195
416
1238
Folding
NEERC 2002
1174
419
1279
Warehouse
NEERC 2003 Central Subregional
1183
421
1221
Malevich Strikes Back!
USU Championship 2002
1165
422
1202
Rectangles Travel
USU Local Contest. March 2002
1108
440
1273
Tie
USU Championship 2003
1076
462
1212
Battleship
Autumn School Contest 2002
1009
486
1236
Decoding Task
NEERC 2002
998
492
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
679
1274
Fractional Arithmetic
NEERC 2003 Central Subregional
710
697
1253
Necrologues
USU Local Contest. March 2003
703
698
1250
Sea Burial
USU Local Contest. March 2003
677
725
1276
Train
NEERC 2003 Central Subregional
675
733
1268
Little Chu
USU Championship 2003
672
736
1230
Introspective Program
NEERC 2002 Central Subregional
645
757
1235
Cricket Field
NEERC 2002
644
759
1277
Cops and Thieves
NEERC 2003 Central Subregional
626
789
1269
Obscene Words Filter
USU Championship 2003
581
849
1233
Amusing Numbers
NEERC 2002
513
949
1245
Pictures
USU Personal Contest 2003
512
953
1237
Evacuation Plan
NEERC 2002
499
976
1278
“… Connecting People”
NEERC 2003 Central Subregional
502
980
1281
River Basin
NEERC 2003 Central Subregional
349
1398
1240
Heroes of Might and Magic
NEERC 2002
341
1414
1266
Kirchhoff's Law
USU Championship 2003
335
1454
1251
Cemetery Manager
USU Local Contest. March 2003
323
1495
1299
Psylonians
Spring School Contest 2004
320
1527
1265
Mirror
USU Championship 2003
317
1534
1285
Thread in a Hyperspace
USU Personal Contest 2004
300
1625
1241
Inlay Cutters
NEERC 2002
284
1689
1267
Yekaterinburg Subway
USU Championship 2003
280
1730
1257
Hyphenation
Autumn School Contest 2003
279
1735
1216
Two Pawns and One King
USU Championship 2002
231
2056
1231
Turing: One, Two, Three, …
NEERC 2002 Central Subregional
222
2136
1256
Cemetery Guard
USU Local Contest. March 2003
210
2263
1288
Astrolocation
USU Personal Contest 2004
206
2332
1232
Asteroid Landing
NEERC 2002 Central Subregional
202
2337
1284
Space Poker
USU Personal Contest 2004
204
2354
1270
Unicube
USU Championship 2003
202
2366
1275
Knights of the Round Table
NEERC 2003 Central Subregional
199
2401
1239
Ghost Busters
NEERC 2002
152
3063
1271
Sailing Directions
USU Championship 2003
97
4688
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