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Problem set. Mathematical Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1011
Conductors
USU Championship 1997
6270
246
1014
Product of Digits
USU Local Contest. 1999
16448
94
1024
Permutations
Autumn School Contest 2000
4838
317
1041
Nikifor
USU Championship 2000
298
4931
1047
Simple Calculations
USU Local Contest. March 2000
5005
299
1053
Pinocchio
NEERC 2000 Central Subregional
4417
338
1055
Combinations
NEERC 2000 Central Subregional
3583
417
1066
Garland
NEERC 2000
2462
573
1098
Questions
2218
551
1142
Relations
DSAP Vietnam Online Contest November 2001
3239
153
1174
Weird Permutations
Romanian Online Contest December 2001
684
717
1200
Horns and Hoofs
USU Local Contest. March 2002
1943
256
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4043
123
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14633
34
1217
Unlucky Tickets
USU Championship 2002
1219
409
1222
Chernobyl’ Eagles
USU Championship 2002
3530
142
1233
Amusing Numbers
NEERC 2002
534
926
1247
Check a Sequence
USU Personal Contest 2003
2098
240
1255
Graveyard of the Cosa Nostra
USU Local Contest. March 2003
1802
279
1259
How to Become Star?
Autumn School Contest 2003
1281
394
1266
Kirchhoff's Law
USU Championship 2003
340
1455
1275
Knights of the Round Table
NEERC 2003 Central Subregional
204
2380
1283
Dwarf
USU Personal Contest 2004
4380
116
1289
One Way Ticket
USU Personal Contest 2004
1270
399
1292
Mars Space Stations
Spring School Contest 2004
1343
378
1295
Crazy Notions
Spring School Contest 2004
3391
150
1321
Floor Indicator
Ural Championship 2004. Round 2
369
1351
1335
White Thesis
Autumn School Contest 2004
2839
181
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4221
122
1349
Farm
Spring School Contest 2005
10208
51
1360
Philosophical Dispute
Ural Championship 2005. Round 2
395
1277
1366
Presents
Ural Championship 2005. Round 2
972
527
1385
Interesting Number
Petrozavodsk Summer 2005. Moscow+Ural Contest
2103
245
1402
Cocktails
Autumn School Contest 2005
4011
129
1417
Space Poker 2
USU Championship 2005
255
1951
1420
Integer-Valued Complex Division
USU Championship 2005
264
1887
1428
Jedi Riddle
Timus Top Coders: First Challenge
1006
498
1467
Sum of Degrees
Petrozavodsk Winter 2006. USU Contest
386
1232
1503
Polynomial
NEERC 2006 Eastern Subregional
266
1740
1561
Winnie the Pooh
Petrozavodsk Summer 2007. NSU Contest
145
2898
1582
Bookmakers
NEERC 2007 Eastern Subregional
3673
121
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
409
1065
1605
Devil's Sequence
USU Personal Contest 2008
704
609
1633
Hippogriffs
USU Championship 2008
532
766
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
98
3787
1666
Vasya Ferrari
Petrozavodsk Winter 2008. USU Contest
304
1303
2125
Continue the Sequence
Petrozavodsk Summer 2018. umnik_team Contest
33
3343
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
28
3783
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1278
104
2145
Olympiad for Everyone
Ural School Programming Contest 2019
360
363
2158
Two progressions
Ural School Programming Contest 2021
25
1649
2171
Two Progressions 2
Ural School Programming Contest 2022
31
1409
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
4
2098
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
5
1950
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