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Problem set. Mathematical Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1011
Conductors
USU Championship 1997
6303
247
1014
Product of Digits
USU Local Contest. 1999
16568
94
1024
Permutations
Autumn School Contest 2000
4863
319
1041
Nikifor
USU Championship 2000
309
4810
1047
Simple Calculations
USU Local Contest. March 2000
5021
301
1053
Pinocchio
NEERC 2000 Central Subregional
4431
341
1055
Combinations
NEERC 2000 Central Subregional
3594
420
1066
Garland
NEERC 2000
2472
577
1098
Questions
2232
553
1142
Relations
DSAP Vietnam Online Contest November 2001
3250
154
1174
Weird Permutations
Romanian Online Contest December 2001
687
721
1200
Horns and Hoofs
USU Local Contest. March 2002
1958
256
1206
Sum of Digits of the Sum of Numbers
USU Local Contest. March 2002
4063
124
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14784
34
1217
Unlucky Tickets
USU Championship 2002
1228
410
1222
Chernobyl’ Eagles
USU Championship 2002
3547
143
1233
Amusing Numbers
NEERC 2002
539
927
1247
Check a Sequence
USU Personal Contest 2003
2112
240
1255
Graveyard of the Cosa Nostra
USU Local Contest. March 2003
1811
280
1259
How to Become Star?
Autumn School Contest 2003
1290
395
1266
Kirchhoff's Law
USU Championship 2003
342
1460
1275
Knights of the Round Table
NEERC 2003 Central Subregional
205
2392
1283
Dwarf
USU Personal Contest 2004
4415
117
1289
One Way Ticket
USU Personal Contest 2004
1281
400
1292
Mars Space Stations
Spring School Contest 2004
1348
380
1295
Crazy Notions
Spring School Contest 2004
3410
151
1321
Floor Indicator
Ural Championship 2004. Round 2
371
1356
1335
White Thesis
Autumn School Contest 2004
2848
182
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4245
122
1349
Farm
Spring School Contest 2005
10285
51
1360
Philosophical Dispute
Ural Championship 2005. Round 2
398
1279
1366
Presents
Ural Championship 2005. Round 2
983
525
1385
Interesting Number
Petrozavodsk Summer 2005. Moscow+Ural Contest
2123
245
1402
Cocktails
Autumn School Contest 2005
4032
129
1417
Space Poker 2
USU Championship 2005
257
1954
1420
Integer-Valued Complex Division
USU Championship 2005
267
1883
1428
Jedi Riddle
Timus Top Coders: First Challenge
1014
499
1467
Sum of Degrees
Petrozavodsk Winter 2006. USU Contest
391
1229
1503
Polynomial
NEERC 2006 Eastern Subregional
270
1734
1561
Winnie the Pooh
Petrozavodsk Summer 2007. NSU Contest
147
2896
1582
Bookmakers
NEERC 2007 Eastern Subregional
3691
122
1591
Abstract Thinking
NEERC 2007 Eastern Subregional
414
1065
1605
Devil's Sequence
USU Personal Contest 2008
716
606
1633
Hippogriffs
USU Championship 2008
540
765
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
100
3771
1666
Vasya Ferrari
Petrozavodsk Winter 2008. USU Contest
309
1300
2125
Continue the Sequence
Petrozavodsk Summer 2018. umnik_team Contest
35
3382
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
30
3805
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1319
107
2145
Olympiad for Everyone
Ural School Programming Contest 2019
370
376
2158
Two progressions
Ural School Programming Contest 2021
28
1763
2171
Two Progressions 2
Ural School Programming Contest 2022
37
1426
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
9
2048
2191
Piecewise Linear Functions
ICPC Ural Regional Contest Qualifier 2022
8
2155
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