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Problem set. Mathematical Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1011
Conductors
USU Championship 1997
6396
249
1014
Product of Digits
USU Local Contest. 1999
17024
93
1024
Permutations
Autumn School Contest 2000
4910
322
1041
Nikifor
USU Championship 2000
342
4452
1047
Simple Calculations
USU Local Contest. March 2000
5066
305
1053
Pinocchio
NEERC 2000 Central Subregional
4481
344
1055
Combinations
NEERC 2000 Central Subregional
3629
425
1066
Garland
NEERC 2000
2497
583
1098
Questions
2262
557
1142
Relations
DSAP Vietnam Online Contest November 2001
3300
155
1174
Weird Permutations
Romanian Online Contest December 2001
707
715
1200
Horns and Hoofs
USU Local Contest. March 2002
1992
257
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4120
125
1209
1, 10, 100, 1000...
Autumn School Contest 2002
15151
34
1217
Unlucky Tickets
USU Championship 2002
1258
409
1222
Chernobyl’ Eagles
USU Championship 2002
3584
144
1233
Amusing Numbers
NEERC 2002
564
904
1247
Check a Sequence
USU Personal Contest 2003
2161
240
1255
Graveyard of the Cosa Nostra
USU Local Contest. March 2003
1836
282
1259
How to Become Star?
Autumn School Contest 2003
1312
396
1266
Kirchhoff's Law
USU Championship 2003
364
1402
1275
Knights of the Round Table
NEERC 2003 Central Subregional
223
2251
1283
Dwarf
USU Personal Contest 2004
4541
116
1289
One Way Ticket
USU Personal Contest 2004
1307
400
1292
Mars Space Stations
Spring School Contest 2004
1379
379
1295
Crazy Notions
Spring School Contest 2004
3470
151
1321
Floor Indicator
Ural Championship 2004. Round 2
379
1354
1335
White Thesis
Autumn School Contest 2004
2892
182
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4307
123
1349
Farm
Spring School Contest 2005
10454
51
1360
Philosophical Dispute
Ural Championship 2005. Round 2
408
1272
1366
Presents
Ural Championship 2005. Round 2
1009
522
1385
Interesting Number
Petrozavodsk Summer 2005. MSU+USU Contest
2151
247
1402
Cocktails
Autumn School Contest 2005
4087
130
1417
Space Poker 2
USU Championship 2005
272
1886
1420
Integer-Valued Complex Division
USU Championship 2005
290
1772
1428
Jedi Riddle
Timus Top Coders: First Challenge
1038
497
1467
Sum of Degrees
Petrozavodsk Winter 2006. USU Contest
404
1216
1503
Polynomial
NEERC 2006 Eastern Subregional
280
1711
1561
Winnie the Pooh
Petrozavodsk Summer 2007. NSU Contest
154
2842
1582
Bookmakers
NEERC 2007 Eastern Subregional
3750
123
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
432
1048
1605
Devil's Sequence
USU Personal Contest 2008
736
606
1633
Hippogriffs
USU Championship 2008
564
754
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
112
3501
1666
Vasya Ferrari
Petrozavodsk Winter 2008. USU Contest
322
1286
2125
Continue the Sequence
Petrozavodsk Summer 2018. umnik_team contest
51
2787
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team contest
45
3091
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1439
111
2145
Olympiad for Everyone
Ural School Programming Contest 2019
419
375
2158
Two progressions
Ural School Programming Contest 2021
40
1731
2171
Two Progressions 2
Ural School Programming Contest 2022
52
1397
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
37
1257
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
23
1787
2212
Prefossum
University-Academy Olympiad 2024
31
953
2237
Home, Sweet Home
ICPC UrFU Contest Qualifier 2026
10
1338
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