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Problem set. Volume 6
Solved problems:
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Volume 5
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ID
Title
Source
Authors
Difficulty
1585
Penguins
NEERC 2007 Eastern Subregional
11541
38
1567
SMS-spam
USU Championship 2007
10950
40
1581
Teamwork
Autumn School Contest 2007
10939
40
1545
Hieroglyphs
Ural Championship 2007
9118
50
1563
Bayan
USU Championship 2007
8212
54
1502
Domino Dots
NEERC 2006 Eastern Subregional
6443
73
1510
Order
NEERC 2006 Eastern Subregional
5449
87
1573
Alchemy
Autumn School Contest 2007
4127
106
1582
Bookmakers
NEERC 2007 Eastern Subregional
3631
120
1521
War Games 2
Timus Top Coders: Third Challenge
3501
133
1506
Columns of Numbers
NEERC 2006 Eastern Subregional
3341
141
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3037
144
1586
Threeprime Numbers
NEERC 2007 Eastern Subregional
3029
144
1576
Telephone Tariffs
Autumn School Contest 2007
3022
145
1590
Bacon’s Cipher
NEERC 2007 Eastern Subregional
2293
190
1515
Cashmaster
Timus Top Coders: Third Challenge
2194
212
1517
Freedom of Choice
Timus Top Coders: Third Challenge
1855
251
1501
Sense of Beauty
NEERC 2006 Eastern Subregional
1777
265
1528
Sequence
Petrozavodsk Winter 2007. D.Gozman Contest
1718
267
1551
Sumo Tournament
Ural Championship 2007
1668
272
1537
Ents
USU Personal Contest 2007
1624
282
1553
Caves and Tunnels
Petrozavodsk Summer 2007. NSU Contest
1515
289
1523
K-inversions
Petrozavodsk Winter 2007. D.Gozman Contest
1549
296
1588
Jamaica
NEERC 2007 Eastern Subregional
1352
322
1574
Mathematicians and brackets
Autumn School Contest 2007
1215
359
1513
Lemon Tale
Timus Top Coders: Third Challenge
1232
377
1525
Path
Petrozavodsk Winter 2007. D.Gozman Contest
1153
397
1562
GM-pineapple
USU Championship 2007
1063
410
1507
Difficult Decision
NEERC 2006 Eastern Subregional
1063
441
1571
Interpreters
USU Championship 2007
973
448
1519
Formula 1
Timus Top Coders: Third Challenge
1013
457
1577
E-mail
Autumn School Contest 2007
924
470
1579
Coat Transportation
Autumn School Contest 2007
885
491
1535
The Hobbit or There and Back Again
USU Personal Contest 2007
915
498
1534
Football in Gondor
USU Personal Contest 2007
785
579
1550
Dean's Pyramid 3
Ural Championship 2007
760
592
1592
Chinese Watches
NEERC 2007 Eastern Subregional
721
599
1554
Multiplicative Functions
Petrozavodsk Summer 2007. NSU Contest
688
632
1500
Pass Licenses
NEERC 2006 Eastern Subregional
736
634
1542
Autocompletion
Ural Championship 2007
706
637
1564
Counting Ones
USU Championship 2007
633
684
1593
Square Country. Version 2
529
736
1587
Flying Pig
NEERC 2007 Eastern Subregional
534
805
1558
Periodical Numbers
Petrozavodsk Summer 2007. NSU Contest
506
855
1547
Password Search
Ural Championship 2007
522
857
1512
Zinium
Timus Top Coders: Third Challenge
534
860
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
500
861
1578
Mammoth Hunt
Autumn School Contest 2007
495
870
1580
Dean's Debts
Autumn School Contest 2007
490
879
1546
Japanese Sorting
Ural Championship 2007
507
882
1530
Ones and Zeroes
Petrozavodsk Winter 2007. D.Gozman Contest
508
891
1570
Eating High
USU Championship 2007
478
901
1560
Elementary Symmetric Functions
Petrozavodsk Summer 2007. NSU Contest
465
929
1569
Networking the “Iset”
USU Championship 2007
455
946
1533
Fat Hobbits
USU Personal Contest 2007
441
1021
1518
Jedi Riddle 3
Timus Top Coders: Third Challenge
435
1051
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
406
1053
1539
Intelligence Data
USU Personal Contest 2007
422
1066
1540
Battle for the Ring
USU Personal Contest 2007
414
1086
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
388
1160
1595
Perfect Sequence
323
1160
1552
Brainfuck
Petrozavodsk Summer 2007. NSU Contest
363
1183
1511
Fiscal Operations
Timus Top Coders: Third Challenge
379
1203
1544
Classmates 3
Ural Championship 2007
359
1235
1538
Towers of Guard
USU Personal Contest 2007
350
1279
1584
Pharaohs’ Secrets
NEERC 2007 Eastern Subregional
316
1344
1526
Martian Plates
Petrozavodsk Winter 2007. D.Gozman Contest
331
1354
1531
Zones on a Plane
Petrozavodsk Winter 2007. D.Gozman Contest
315
1421
1568
Train Car Sorting
USU Championship 2007
259
1635
1508
Japanese Puzzle
NEERC 2006 Eastern Subregional
278
1641
1503
Polynomial
NEERC 2006 Eastern Subregional
261
1744
1522
Factory
Petrozavodsk Winter 2007. D.Gozman Contest
251
1769
1516
Nostalgia
Timus Top Coders: Third Challenge
252
1786
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
237
1786
1565
The Duel for Three
USU Championship 2007
236
1788
1514
National Park
Timus Top Coders: Third Challenge
249
1807
1583
Cheese
NEERC 2007 Eastern Subregional
224
1872
1599
Winding Number
101
1937
1532
Lost in Translation
USU Personal Contest 2007
219
2011
1597
Chernobyl’ Eagle on a Roof. Version 2
109
2033
1541
Chase
USU Personal Contest 2007
203
2162
1543
Dance Revolution
Ural Championship 2007
199
2181
1504
Good Manners
NEERC 2006 Eastern Subregional
203
2219
1549
Another Japanese Puzzle
Ural Championship 2007
185
2337
1520
Empire Strikes Back
Timus Top Coders: Third Challenge
181
2450
1561
Winnie the Pooh
Petrozavodsk Summer 2007. NSU Contest
144
2865
1505
Oil Transfer
NEERC 2006 Eastern Subregional
154
2882
1566
Triangular Postcards
USU Championship 2007
133
3076
1509
Domino Recognition
NEERC 2006 Eastern Subregional
126
3476
1529
Game of Squares
Petrozavodsk Winter 2007. D.Gozman Contest
115
3693
1559
TruCoders Linguistics
Petrozavodsk Summer 2007. NSU Contest
93
4284
1598
DSA Attack
44
4449
1594
Aztec Treasure
72
4714
1536
Delights of Pipe-weed
USU Personal Contest 2007
54
7194
1596
Knight Mare
24
9000
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
38
9192
1555
Find the Treasure!
Petrozavodsk Summer 2007. NSU Contest
37
9388
1524
Men in Black
Petrozavodsk Winter 2007. D.Gozman Contest
25
13190
1548
Sakura and Statistics
Ural Championship 2007
19
15715
1589
Sokoban
NEERC 2007 Eastern Subregional
14
18249
Solved problems:
show
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Sort by:
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