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Problem set. Volume 4
Solved problems:
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ID
Title
Source
Authors
Difficulty
1300
Taxes
Ural Championship 1998
168
2878
1301
Cube in Labyrinth
Ural Championship 1998
679
744
1302
Delta-wave
Ural Championship 1998
1458
349
1303
Minimal Coverage
Ural Championship 1998
2833
180
1304
Parallelepiped
Ural Championship 1998
257
1919
1305
Convex Hull
Ural Championship 1998
715
707
1306
Sequence Median
Ural Championship 1998
3527
145
1307
Archiver
Ural Championship 2004. Round 1
388
1288
1308
Dean's Pyramid
Ural Championship 2004. Round 1
170
2848
1309
Dispute
Ural Championship 2004. Round 1
838
604
1310
ACM Diagnostics
Ural Championship 2004. Round 1
459
1093
1311
Stable Construction
Ural Championship 2004. Round 1
341
1460
1312
Tray
Ural Championship 2004. Round 1
160
3015
1313
Some Words about Sport
Ural Championship 2004. Round 1
15098
34
1314
Chase in Subway
Ural Championship 2004. Round 1
857
591
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
265
1864
1316
Electronic Auction
Ural Championship 2004. Round 1
1164
437
1317
Hail
Ural Championship 2004. Round 2
470
1068
1318
Logarithm
Ural Championship 2004. Round 2
358
1393
1319
Hotel
Ural Championship 2004. Round 2
13214
39
1320
Graph Decomposition
Ural Championship 2004. Round 2
1774
287
1321
Floor Indicator
Ural Championship 2004. Round 2
369
1353
1322
Spy
Ural Championship 2004. Round 2
2751
186
1323
Classmates
Ural Championship 2004. Round 2
612
824
1324
Extra Spaces
Ural Championship 2004. Round 2
540
932
1325
Dirt
Ural Championship 2004. Round 2
943
538
1326
Bottle Taps
Ural Championship 2004. Round 2
1296
393
1327
Fuses
Autumn School Contest 2004
11039
47
1328
Fireball
Autumn School Contest 2004
356
1408
1329
Galactic History
Autumn School Contest 2004
1106
462
1330
Intervals
Autumn School Contest 2004
5379
96
1331
Vladislava
Autumn School Contest 2004
505
1001
1332
Genie Bomber
Autumn School Contest 2004
817
623
1333
Genie Bomber 2
Autumn School Contest 2004
2371
216
1334
Checkers
Autumn School Contest 2004
943
541
1335
White Thesis
Autumn School Contest 2004
2840
181
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4228
122
1337
Bureaucracy
Autumn School Contest 2004
320
1562
1338
Automobiles
USU Championship 2004
279
1789
1339
Babies
USU Championship 2004
589
863
1340
Cucaracha
USU Championship 2004
94
4971
1341
Device
USU Championship 2004
444
1139
1342
Enterprise
USU Championship 2004
685
744
1343
Fairy Tale
USU Championship 2004
1233
416
1344
Gigantic Turnip
USU Championship 2004
105
4496
1345
HTML
USU Championship 2004
347
1448
1346
Intervals of Monotonicity
USU Championship 2004
1728
297
1347
Blog
Spring School Contest 2005
365
1380
1348
Goat in the Garden 2
Spring School Contest 2005
2834
182
1349
Farm
Spring School Contest 2005
10218
51
1350
Canteen
Spring School Contest 2005
1303
394
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
975
525
1352
Mersenne Primes
Spring School Contest 2005
3951
131
1353
Milliard Vasya's Function
Spring School Contest 2005
5004
103
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3737
138
1355
Bald Spot Revisited
Spring School Contest 2005
2447
211
1356
Something Easier
Spring School Contest 2005
1741
295
1357
Teakettle 1.0 for Dummies
Spring School Contest 2005
425
1189
1358
Cables
Spring School Contest 2005
946
541
1359
Construction
Spring School Contest 2005
437
1157
1360
Philosophical Dispute
Ural Championship 2005. Round 2
396
1275
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
254
1961
1362
Classmates 2
Ural Championship 2005. Round 2
1157
444
1363
Halftones
Ural Championship 2005. Round 2
89
5230
1364
LaraKiller
Ural Championship 2005. Round 2
534
952
1365
Testing Calculator
Ural Championship 2005. Round 2
97
4839
1366
Presents
Ural Championship 2005. Round 2
975
526
1367
Top Secret
Ural Championship 2005. Round 2
162
3011
1368
Goat in the Garden 3
Ural Championship 2005. Round 2
199
2477
1369
Cockroach Race
Ural Championship 2005. Round 2
30
12945
1370
Magician
Ural Championship 2005. Round 2
5803
89
1371
Cargo Agency
Ural Championship 2005. Round 1
983
523
1372
Death Star
Ural Championship 2005. Round 1
77
5967
1373
Pictura ex Machina
Ural Championship 2005. Round 1
604
845
1374
Misere
Ural Championship 2005. Round 1
39
10594
1375
Bill Clevers
Ural Championship 2005. Round 1
949
541
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
44
9613
1377
Lara Croft
Ural Championship 2005. Round 1
1742
296
1378
Artificial Intelligence
Ural Championship 2005. Round 1
339
1487
1379
Cups Transportation
Ural Championship 2005. Round 1
820
625
1380
Ostap's Chess
Petrozavodsk Summer 2005. Moscow+Ural Contest
113
4221
1381
Cockroaches in the Building
Petrozavodsk Summer 2005. Moscow+Ural Contest
137
3532
1382
Game with Cards
Petrozavodsk Summer 2005. Moscow+Ural Contest
288
1742
1383
Flower-garden Designs
Petrozavodsk Summer 2005. Moscow+Ural Contest
42
9984
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
94
4992
1385
Interesting Number
Petrozavodsk Summer 2005. Moscow+Ural Contest
2106
245
1386
Maze
Petrozavodsk Summer 2005. Moscow+Ural Contest
439
1156
1387
Vasya's Dad
Petrozavodsk Summer 2005. Moscow+Ural Contest
364
1388
1388
Photo
Petrozavodsk Summer 2005. Moscow+Ural Contest
22
16224
1389
Roadworks
Petrozavodsk Summer 2005. Moscow+Ural Contest
921
558
1390
Shots at Walls
Petrozavodsk Summer 2005. Moscow+Ural Contest
44
9614
1391
Snake
Petrozavodsk Summer 2005. Moscow+Ural Contest
85
5465
1392
Dreaming of Stars
668
766
1393
Average Common Prefix
435
1157
1394
Ships. Version 2
23
15733
1395
Pascal vs. C++. Version 2
204
2332
1396
Maximum. Version 2
241
1984
1397
Points Game
272
1718
1398
Bishop and Pawn
537
868
1399
Economical Director
34
10789
Solved problems:
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