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Problem set. Mathematical Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1011
Conductors
USU Championship 1997
6338
246
1014
Product of Digits
USU Local Contest. 1999
16680
94
1024
Permutations
Autumn School Contest 2000
4868
319
1041
Nikifor
USU Championship 2000
309
4824
1047
Simple Calculations
USU Local Contest. March 2000
5026
302
1053
Pinocchio
NEERC 2000 Central Subregional
4433
342
1055
Combinations
NEERC 2000 Central Subregional
3596
421
1066
Garland
NEERC 2000
2476
577
1098
Questions
2235
554
1142
Relations
DSAP Vietnam Online Contest November 2001
3255
154
1174
Weird Permutations
Romanian Online Contest December 2001
689
721
1200
Horns and Hoofs
USU Local Contest. March 2002
1963
256
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4078
124
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14844
34
1217
Unlucky Tickets
USU Championship 2002
1237
409
1222
Chernobyl’ Eagles
USU Championship 2002
3550
143
1233
Amusing Numbers
NEERC 2002
542
924
1247
Check a Sequence
USU Personal Contest 2003
2114
241
1255
Graveyard of the Cosa Nostra
USU Local Contest. March 2003
1814
281
1259
How to Become Star?
Autumn School Contest 2003
1294
395
1266
Kirchhoff's Law
USU Championship 2003
342
1464
1275
Knights of the Round Table
NEERC 2003 Central Subregional
205
2399
1283
Dwarf
USU Personal Contest 2004
4424
117
1289
One Way Ticket
USU Personal Contest 2004
1290
398
1292
Mars Space Stations
Spring School Contest 2004
1351
380
1295
Crazy Notions
Spring School Contest 2004
3417
151
1321
Floor Indicator
Ural Championship 2004. Round 2
372
1356
1335
White Thesis
Autumn School Contest 2004
2851
182
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4248
122
1349
Farm
Spring School Contest 2005
10303
51
1360
Philosophical Dispute
Ural Championship 2005. Round 2
400
1276
1366
Presents
Ural Championship 2005. Round 2
985
526
1385
Interesting Number
Petrozavodsk Summer 2005. Moscow+Ural Contest
2123
246
1402
Cocktails
Autumn School Contest 2005
4035
130
1417
Space Poker 2
USU Championship 2005
257
1959
1420
Integer-Valued Complex Division
USU Championship 2005
267
1889
1428
Jedi Riddle
Timus Top Coders: First Challenge
1019
498
1467
Sum of Degrees
Petrozavodsk Winter 2006. USU Contest
391
1233
1503
Polynomial
NEERC 2006 Eastern Subregional
270
1739
1561
Winnie the Pooh
Petrozavodsk Summer 2007. NSU Contest
147
2906
1582
Bookmakers
NEERC 2007 Eastern Subregional
3694
122
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
414
1069
1605
Devil's Sequence
USU Personal Contest 2008
717
608
1633
Hippogriffs
USU Championship 2008
541
767
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
100
3787
1666
Vasya Ferrari
Petrozavodsk Winter 2008. USU Contest
310
1302
2125
Continue the Sequence
Petrozavodsk Summer 2018. umnik_team Contest
37
3292
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
31
3774
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1328
109
2145
Olympiad for Everyone
Ural School Programming Contest 2019
380
373
2158
Two progressions
Ural School Programming Contest 2021
28
1836
2171
Two Progressions 2
Ural School Programming Contest 2022
37
1486
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
10
2089
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
8
2315
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