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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
2902
1301
Cube in Labyrinth
Ural Championship 1998
687
741
1302
Delta-wave
Ural Championship 1998
1465
350
1303
Minimal Coverage
Ural Championship 1998
2845
181
1304
Parallelepiped
Ural Championship 1998
263
1892
1305
Convex Hull
Ural Championship 1998
719
709
1306
Sequence Median
Ural Championship 1998
3535
146
1307
Archiver
Ural Championship 2004. Round 1
392
1285
1308
Dean's Pyramid
Ural Championship 2004. Round 1
170
2871
1309
Dispute
Ural Championship 2004. Round 1
844
605
1310
ACM Diagnostics
Ural Championship 2004. Round 1
465
1088
1311
Stable Construction
Ural Championship 2004. Round 1
344
1460
1312
Tray
Ural Championship 2004. Round 1
161
3022
1313
Some Words about Sport
Ural Championship 2004. Round 1
15172
34
1314
Chase in Subway
Ural Championship 2004. Round 1
869
588
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
268
1859
1316
Electronic Auction
Ural Championship 2004. Round 1
1174
436
1317
Hail
Ural Championship 2004. Round 2
472
1072
1318
Logarithm
Ural Championship 2004. Round 2
360
1397
1319
Hotel
Ural Championship 2004. Round 2
13275
39
1320
Graph Decomposition
Ural Championship 2004. Round 2
1791
287
1321
Floor Indicator
Ural Championship 2004. Round 2
371
1356
1322
Spy
Ural Championship 2004. Round 2
2805
184
1323
Classmates
Ural Championship 2004. Round 2
616
826
1324
Extra Spaces
Ural Championship 2004. Round 2
541
938
1325
Dirt
Ural Championship 2004. Round 2
952
537
1326
Bottle Taps
Ural Championship 2004. Round 2
1309
392
1327
Fuses
Autumn School Contest 2004
11080
47
1328
Fireball
Autumn School Contest 2004
358
1412
1329
Galactic History
Autumn School Contest 2004
1119
460
1330
Intervals
Autumn School Contest 2004
5404
96
1331
Vladislava
Autumn School Contest 2004
510
999
1332
Genie Bomber
Autumn School Contest 2004
827
621
1333
Genie Bomber 2
Autumn School Contest 2004
2381
217
1334
Checkers
Autumn School Contest 2004
951
541
1335
White Thesis
Autumn School Contest 2004
2848
182
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4245
122
1337
Bureaucracy
Autumn School Contest 2004
325
1551
1338
Automobiles
USU Championship 2004
280
1797
1339
Babies
USU Championship 2004
595
861
1340
Cucaracha
USU Championship 2004
94
5011
1341
Device
USU Championship 2004
445
1145
1342
Enterprise
USU Championship 2004
700
734
1343
Fairy Tale
USU Championship 2004
1241
417
1344
Gigantic Turnip
USU Championship 2004
106
4492
1345
HTML
USU Championship 2004
352
1440
1346
Intervals of Monotonicity
USU Championship 2004
1741
298
1347
Blog
Spring School Contest 2005
369
1376
1348
Goat in the Garden 2
Spring School Contest 2005
2907
179
1349
Farm
Spring School Contest 2005
10285
51
1350
Canteen
Spring School Contest 2005
1332
389
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
985
524
1352
Mersenne Primes
Spring School Contest 2005
3967
131
1353
Milliard Vasya's Function
Spring School Contest 2005
5047
103
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3763
138
1355
Bald Spot Revisited
Spring School Contest 2005
2460
211
1356
Something Easier
Spring School Contest 2005
1749
296
1357
Teakettle 1.0 for Dummies
Spring School Contest 2005
428
1191
1358
Cables
Spring School Contest 2005
952
542
1359
Construction
Spring School Contest 2005
439
1161
1360
Philosophical Dispute
Ural Championship 2005. Round 2
398
1279
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
256
1962
1362
Classmates 2
Ural Championship 2005. Round 2
1164
445
1363
Halftones
Ural Championship 2005. Round 2
92
5116
1364
LaraKiller
Ural Championship 2005. Round 2
535
958
1365
Testing Calculator
Ural Championship 2005. Round 2
101
4702
1366
Presents
Ural Championship 2005. Round 2
983
526
1367
Top Secret
Ural Championship 2005. Round 2
164
2999
1368
Goat in the Garden 3
Ural Championship 2005. Round 2
199
2497
1369
Cockroach Race
Ural Championship 2005. Round 2
32
12426
1370
Magician
Ural Championship 2005. Round 2
5832
89
1371
Cargo Agency
Ural Championship 2005. Round 1
989
524
1372
Death Star
Ural Championship 2005. Round 1
79
5879
1373
Pictura ex Machina
Ural Championship 2005. Round 1
609
845
1374
Misere
Ural Championship 2005. Round 1
39
10677
1375
Bill Clevers
Ural Championship 2005. Round 1
956
542
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
44
9689
1377
Lara Croft
Ural Championship 2005. Round 1
1752
297
1378
Artificial Intelligence
Ural Championship 2005. Round 1
342
1486
1379
Cups Transportation
Ural Championship 2005. Round 1
847
610
1380
Ostap's Chess
Petrozavodsk Summer 2005. Moscow+Ural Contest
115
4186
1381
Cockroaches in the Building
Petrozavodsk Summer 2005. Moscow+Ural Contest
137
3560
1382
Game with Cards
Petrozavodsk Summer 2005. Moscow+Ural Contest
291
1738
1383
Flower-garden Designs
Petrozavodsk Summer 2005. Moscow+Ural Contest
44
9690
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
96
4936
1385
Interesting Number
Petrozavodsk Summer 2005. Moscow+Ural Contest
2123
245
1386
Maze
Petrozavodsk Summer 2005. Moscow+Ural Contest
440
1163
1387
Vasya's Dad
Petrozavodsk Summer 2005. Moscow+Ural Contest
369
1381
1388
Photo
Petrozavodsk Summer 2005. Moscow+Ural Contest
24
15390
1389
Roadworks
Petrozavodsk Summer 2005. Moscow+Ural Contest
932
555
1390
Shots at Walls
Petrozavodsk Summer 2005. Moscow+Ural Contest
47
9180
1391
Snake
Petrozavodsk Summer 2005. Moscow+Ural Contest
85
5508
1392
Dreaming of Stars
673
766
1393
Average Common Prefix
439
1156
1394
Ships. Version 2
23
15857
1395
Pascal vs. C++. Version 2
208
2309
1396
Maximum. Version 2
244
1977
1397
Points Game
274
1721
1398
Bishop and Pawn
542
869
1399
Economical Director
37
10195
Solved problems:
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