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Problem set. Mathematical Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1011
Conductors
USU Championship 1997
6326
247
1014
Product of Digits
USU Local Contest. 1999
16592
94
1024
Permutations
Autumn School Contest 2000
4867
319
1041
Nikifor
USU Championship 2000
309
4821
1047
Simple Calculations
USU Local Contest. March 2000
5024
302
1053
Pinocchio
NEERC 2000 Central Subregional
4433
341
1055
Combinations
NEERC 2000 Central Subregional
3596
420
1066
Garland
NEERC 2000
2476
577
1098
Questions
2235
553
1142
Relations
DSAP Vietnam Online Contest November 2001
3253
154
1174
Weird Permutations
Romanian Online Contest December 2001
688
721
1200
Horns and Hoofs
USU Local Contest. March 2002
1962
256
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4074
124
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14823
34
1217
Unlucky Tickets
USU Championship 2002
1234
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
1813
281
1259
How to Become Star?
Autumn School Contest 2003
1293
395
1266
Kirchhoff's Law
USU Championship 2003
342
1463
1275
Knights of the Round Table
NEERC 2003 Central Subregional
205
2397
1283
Dwarf
USU Personal Contest 2004
4421
117
1289
One Way Ticket
USU Personal Contest 2004
1288
398
1292
Mars Space Stations
Spring School Contest 2004
1350
380
1295
Crazy Notions
Spring School Contest 2004
3414
151
1321
Floor Indicator
Ural Championship 2004. Round 2
372
1355
1335
White Thesis
Autumn School Contest 2004
2851
182
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4246
122
1349
Farm
Spring School Contest 2005
10296
51
1360
Philosophical Dispute
Ural Championship 2005. Round 2
398
1282
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
1958
1420
Integer-Valued Complex Division
USU Championship 2005
267
1887
1428
Jedi Riddle
Timus Top Coders: First Challenge
1018
498
1467
Sum of Degrees
Petrozavodsk Winter 2006. USU Contest
391
1232
1503
Polynomial
NEERC 2006 Eastern Subregional
270
1738
1561
Winnie the Pooh
Petrozavodsk Summer 2007. NSU Contest
147
2904
1582
Bookmakers
NEERC 2007 Eastern Subregional
3694
122
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
414
1068
1605
Devil's Sequence
USU Personal Contest 2008
717
607
1633
Hippogriffs
USU Championship 2008
540
767
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
100
3783
1666
Vasya Ferrari
Petrozavodsk Winter 2008. USU Contest
310
1300
2125
Continue the Sequence
Petrozavodsk Summer 2018. umnik_team Contest
37
3279
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
31
3758
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1323
109
2145
Olympiad for Everyone
Ural School Programming Contest 2019
378
373
2158
Two progressions
Ural School Programming Contest 2021
28
1818
2171
Two Progressions 2
Ural School Programming Contest 2022
37
1471
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
9
2161
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
8
2275
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