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Problem set. Volume 4
Solved problems:
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ID
Title
Source
Authors
Difficulty
1300
Taxes
Ural Championship 1998
166
2861
1301
Cube in Labyrinth
Ural Championship 1998
671
739
1302
Delta-wave
Ural Championship 1998
1447
346
1303
Minimal Coverage
Ural Championship 1998
2773
181
1304
Parallelepiped
Ural Championship 1998
256
1893
1305
Convex Hull
Ural Championship 1998
706
703
1306
Sequence Median
Ural Championship 1998
3485
144
1307
Archiver
Ural Championship 2004. Round 1
384
1279
1308
Dean's Pyramid
Ural Championship 2004. Round 1
168
2830
1309
Dispute
Ural Championship 2004. Round 1
819
608
1310
ACM Diagnostics
Ural Championship 2004. Round 1
454
1086
1311
Stable Construction
Ural Championship 2004. Round 1
338
1448
1312
Tray
Ural Championship 2004. Round 1
159
2981
1313
Some Words about Sport
Ural Championship 2004. Round 1
14780
34
1314
Chase in Subway
Ural Championship 2004. Round 1
843
591
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
255
1901
1316
Electronic Auction
Ural Championship 2004. Round 1
1143
437
1317
Hail
Ural Championship 2004. Round 2
456
1081
1318
Logarithm
Ural Championship 2004. Round 2
346
1415
1319
Hotel
Ural Championship 2004. Round 2
12996
39
1320
Graph Decomposition
Ural Championship 2004. Round 2
1720
291
1321
Floor Indicator
Ural Championship 2004. Round 2
367
1336
1322
Spy
Ural Championship 2004. Round 2
2446
205
1323
Classmates
Ural Championship 2004. Round 2
605
819
1324
Extra Spaces
Ural Championship 2004. Round 2
534
926
1325
Dirt
Ural Championship 2004. Round 2
927
538
1326
Bottle Taps
Ural Championship 2004. Round 2
1262
396
1327
Fuses
Autumn School Contest 2004
10892
46
1328
Fireball
Autumn School Contest 2004
353
1396
1329
Galactic History
Autumn School Contest 2004
1084
463
1330
Intervals
Autumn School Contest 2004
5260
96
1331
Vladislava
Autumn School Contest 2004
500
993
1332
Genie Bomber
Autumn School Contest 2004
804
622
1333
Genie Bomber 2
Autumn School Contest 2004
2330
216
1334
Checkers
Autumn School Contest 2004
934
537
1335
White Thesis
Autumn School Contest 2004
2815
179
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4181
121
1337
Bureaucracy
Autumn School Contest 2004
317
1549
1338
Automobiles
USU Championship 2004
275
1783
1339
Babies
USU Championship 2004
580
861
1340
Cucaracha
USU Championship 2004
92
4983
1341
Device
USU Championship 2004
438
1135
1342
Enterprise
USU Championship 2004
671
746
1343
Fairy Tale
USU Championship 2004
1206
418
1344
Gigantic Turnip
USU Championship 2004
103
4498
1345
HTML
USU Championship 2004
346
1428
1346
Intervals of Monotonicity
USU Championship 2004
1709
296
1347
Blog
Spring School Contest 2005
359
1378
1348
Goat in the Garden 2
Spring School Contest 2005
2712
187
1349
Farm
Spring School Contest 2005
10078
50
1350
Canteen
Spring School Contest 2005
1285
393
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
964
522
1352
Mersenne Primes
Spring School Contest 2005
3912
130
1353
Milliard Vasya's Function
Spring School Contest 2005
4901
104
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3664
138
1355
Bald Spot Revisited
Spring School Contest 2005
2405
211
1356
Something Easier
Spring School Contest 2005
1716
295
1357
Teakettle 1.0 for Dummies
Spring School Contest 2005
417
1191
1358
Cables
Spring School Contest 2005
927
543
1359
Construction
Spring School Contest 2005
432
1151
1360
Philosophical Dispute
Ural Championship 2005. Round 2
392
1266
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
255
1921
1362
Classmates 2
Ural Championship 2005. Round 2
1133
445
1363
Halftones
Ural Championship 2005. Round 2
86
5303
1364
LaraKiller
Ural Championship 2005. Round 2
522
957
1365
Testing Calculator
Ural Championship 2005. Round 2
97
4758
1366
Presents
Ural Championship 2005. Round 2
960
525
1367
Top Secret
Ural Championship 2005. Round 2
156
3067
1368
Goat in the Garden 3
Ural Championship 2005. Round 2
197
2459
1369
Cockroach Race
Ural Championship 2005. Round 2
28
13396
1370
Magician
Ural Championship 2005. Round 2
5663
90
1371
Cargo Agency
Ural Championship 2005. Round 1
961
526
1372
Death Star
Ural Championship 2005. Round 1
75
6005
1373
Pictura ex Machina
Ural Championship 2005. Round 1
595
844
1374
Misere
Ural Championship 2005. Round 1
37
10860
1375
Bill Clevers
Ural Championship 2005. Round 1
934
541
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
43
9630
1377
Lara Croft
Ural Championship 2005. Round 1
1726
294
1378
Artificial Intelligence
Ural Championship 2005. Round 1
336
1475
1379
Cups Transportation
Ural Championship 2005. Round 1
790
638
1380
Ostap's Chess
Petrozavodsk Summer 2005. Moscow+Ural Contest
113
4150
1381
Cockroaches in the Building
Petrozavodsk Summer 2005. Moscow+Ural Contest
136
3496
1382
Game with Cards
Petrozavodsk Summer 2005. Moscow+Ural Contest
283
1742
1383
Flower-garden Designs
Petrozavodsk Summer 2005. Moscow+Ural Contest
42
9817
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
91
5054
1385
Interesting Number
Petrozavodsk Summer 2005. Moscow+Ural Contest
2086
244
1386
Maze
Petrozavodsk Summer 2005. Moscow+Ural Contest
429
1163
1387
Vasya's Dad
Petrozavodsk Summer 2005. Moscow+Ural Contest
357
1391
1388
Photo
Petrozavodsk Summer 2005. Moscow+Ural Contest
21
16467
1389
Roadworks
Petrozavodsk Summer 2005. Moscow+Ural Contest
903
559
1390
Shots at Walls
Petrozavodsk Summer 2005. Moscow+Ural Contest
43
9632
1391
Snake
Petrozavodsk Summer 2005. Moscow+Ural Contest
86
5317
1392
Dreaming of Stars
663
759
1393
Average Common Prefix
428
1156
1394
Ships. Version 2
17
18907
1395
Pascal vs. C++. Version 2
199
2345
1396
Maximum. Version 2
240
1955
1397
Points Game
271
1691
1398
Bishop and Pawn
524
872
1399
Economical Director
34
10573
Solved problems:
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