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Problem set. Volume 5
Solved problems:
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Volume 4
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ID
Title
Source
Authors
Difficulty
1409
Two Gangsters
Autumn School Contest 2005
32979
15
1493
One Step from Happiness
Autumn School Contest 2006
10062
47
1496
Spammer
Autumn School Contest 2006
9702
49
1457
Heating Main
Timus Top Coders: Second Challenge
7277
67
1404
Easy to Hack!
Autumn School Contest 2005
6344
80
1446
Sorting Hat
Ural Championship 2006
5435
91
1494
Monobilliards
Autumn School Contest 2006
4691
101
1402
Cocktails
Autumn School Contest 2005
3972
128
1450
Russian Pipelines
Timus Top Coders: Second Challenge
2914
168
1423
String Tale
Timus Top Coders: First Challenge
2878
172
1413
Mars Jumper
USU Championship 2005
2865
177
1471
Distance in the Tree
Petrozavodsk Summer 2006. Ural+Orel Contest
2853
166
1401
Gamers
Autumn School Contest 2005
2829
180
1490
Fire Circle
Autumn School Contest 2006
2395
197
1491
Unreal Story
Autumn School Contest 2006
2251
209
1433
Diamonds
USU Personal Contest 2006
1894
261
1470
UFOs
Petrozavodsk Summer 2006. Ural+Orel Contest
1885
251
1444
Elephpotamus
Ural Championship 2006
1631
301
1497
Cutting a Square
Autumn School Contest 2006
1579
298
1406
Next Number
Autumn School Contest 2005
1476
343
1403
Courier
Autumn School Contest 2005
1447
350
1495
One-two, One-two 2
Autumn School Contest 2006
1391
338
1431
Diplomas
USU Personal Contest 2006
1361
362
1427
SMS
Timus Top Coders: First Challenge
1354
365
1407
One-two, One-two
Autumn School Contest 2005
1320
384
1410
Crack
USU Championship 2005
1308
386
1416
Confidential
USU Championship 2005
1275
396
1483
Table Football
USU Championship 2006
1235
381
1489
Points on a Parallelepiped
Autumn School Contest 2006
1203
390
1414
Astronomical Database
USU Championship 2005
1166
433
1439
Battle with You-Know-Who
Ural Championship 2006
1115
439
1430
Crime and Punishment
Timus Top Coders: First Challenge
1066
463
1480
Coupons
USU Championship 2006
1013
463
1437
Gasoline Station
USU Personal Contest 2006
999
492
1428
Jedi Riddle
Timus Top Coders: First Challenge
995
495
1465
Pawn Game
Petrozavodsk Winter 2006. USU Contest
957
496
1400
Cellular Characters
Autumn School Contest 2005
928
544
1421
Credit Operations
Timus Top Coders: First Challenge
913
539
1448
Lighting in Hogwarts
Ural Championship 2006
844
578
1445
Christmas gifts
Ural Championship 2006
823
592
1452
Pascal vs. C++
Timus Top Coders: Second Challenge
795
610
1463
Happiness to People!
Petrozavodsk Winter 2006. USU Contest
791
598
1484
Film Rating
USU Championship 2006
724
645
1443
Rails
Ural Championship 2006
720
676
1486
Equal Squares
USU Championship 2006
717
652
1440
Training Schedule
Ural Championship 2006
708
687
1405
Goat in the Garden 5
Autumn School Contest 2005
704
715
1424
Minibus
Timus Top Coders: First Challenge
688
713
1474
About Frogs
Petrozavodsk Summer 2006. Ural+Orel Contest
653
717
1456
Jedi Riddle 2
Timus Top Coders: Second Challenge
649
745
1436
Billboard
USU Personal Contest 2006
585
834
1462
Uncle Scrooge's Gold
Petrozavodsk Winter 2006. USU Contest
564
835
1422
Fireflies
Timus Top Coders: First Challenge
561
872
1468
Fraction
Petrozavodsk Summer 2006. Ural+Orel Contest
559
835
1418
Military Story
USU Championship 2005
551
907
1498
Stroke at Full Speed
Autumn School Contest 2006
525
884
1434
Buses in Vasyuki
USU Personal Contest 2006
501
972
1435
Financial Error
USU Personal Contest 2006
491
991
1447
Portkey Network
Ural Championship 2006
488
991
1451
Beerhouse Tale
Timus Top Coders: Second Challenge
481
999
1469
No Smoking!
Petrozavodsk Summer 2006. Ural+Orel Contest
473
984
1461
Christmas Garland
Petrozavodsk Winter 2006. USU Contest
472
994
1472
Martian Army
Petrozavodsk Summer 2006. Ural+Orel Contest
434
1070
1441
From the History of Gringotts Bank
Ural Championship 2006
423
1140
1408
Polynomial Multiplication
Autumn School Contest 2005
414
1204
1419
Maps of the Island Worlds
USU Championship 2005
408
1218
1453
Queen
Timus Top Coders: Second Challenge
396
1209
1458
War Games
Timus Top Coders: Second Challenge
391
1224
1467
Sum of Degrees
Petrozavodsk Winter 2006. USU Contest
382
1223
1487
Chinese Football
USU Championship 2006
365
1263
1476
Lunar Code
Petrozavodsk Summer 2006. Ural+Orel Contest
357
1294
1412
Autumn Tide
USU Championship 2005
327
1510
1449
Credit Operations 2
Timus Top Coders: Second Challenge
324
1469
1499
Kerchiefs
Autumn School Contest 2006
311
1474
1488
ACM Poker
USU Championship 2006
291
1574
1425
Queen 2
Timus Top Coders: First Challenge
280
1717
1459
Archer's Travel
Petrozavodsk Winter 2006. USU Contest
278
1664
1485
Football and Lie
USU Championship 2006
267
1710
1420
Integer-Valued Complex Division
USU Championship 2005
263
1864
1417
Space Poker 2
USU Championship 2005
253
1935
1492
Vasya's Dad 2
Autumn School Contest 2006
227
1996
1455
Freedom of Speech
Timus Top Coders: Second Challenge
224
2097
1481
Winning Chances
USU Championship 2006
193
2334
1454
Rectangles 2
Timus Top Coders: Second Challenge
184
2529
1429
Biscuits
Timus Top Coders: First Challenge
177
2663
1464
Light
Petrozavodsk Winter 2006. USU Contest
156
2888
1411
40 Islands Knights
USU Championship 2005
155
3084
1438
Time Limit Exceeded
USU Personal Contest 2006
153
3046
1477
Airplanes
Petrozavodsk Summer 2006. Ural+Orel Contest
149
2988
1482
Triangle Game
USU Championship 2006
146
3037
1442
Floo Powder
Ural Championship 2006
145
3184
1466
Magic Square
Petrozavodsk Winter 2006. USU Contest
142
3154
1475
Ryaba Hen
Petrozavodsk Summer 2006. Ural+Orel Contest
115
3800
1478
Spy Satellites
Petrozavodsk Summer 2006. Ural+Orel Contest
109
3992
1460
Wires
Petrozavodsk Winter 2006. USU Contest
105
4168
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
95
4524
1426
Rectangles
Timus Top Coders: First Challenge
87
5133
1473
Farm 2
Petrozavodsk Summer 2006. Ural+Orel Contest
79
5338
1432
Twofold Luck
USU Personal Contest 2006
53
7880
1415
Mobile Life
USU Championship 2005
45
9251
Solved problems:
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