e-olymp
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Problems

Complexity
All Problems Very simple Simple Average Difficult Very difficult
Classification
All Problems 2-sat algorithms-on-strings articulation-point backtracking beginners bellman-ford-algorithm binary-search bitwise-operators breadth-first-search bridges calculation-system catalan-numbers clique combinatorics connected-components depth-first-search dijkstra-algorithm diophantine-equations dynamic-programming euclid-extended-algorithm Others...
26
New-year presents
962 / 1333
27
Cycle shifts
3924 / 4793
28
Product
574 / 1354
29
The level of palindrome
1935 / 2725
30
Certification
99 / 240
31
Superstitious Santa Claus
1124 / 1339
32
Queen and pawn
154 / 426
33
The favourite numbers of Santa Claus
1585 / 2448
34
The word of sponsor
1131 / 1477
35
Triangles from Matches
549 / 1474
36
Gorynych the Dragon
1159 / 1651
37
Mail of the sponsor
781 / 1008
38
Firs conversation
93 / 216
39
Sponsor’s money
400 / 560
40
Pipeline (RU)
245 / 436
41
Command of the Mayor
411 / 623
42
Green spot
97 / 259
43
Competitors’ quantity of olimpia
2611 / 3574
44
The number of ones
2126 / 3175
45
The Fuel
136 / 196
46
The Segments
1224 / 1582
47
The Parquet of the Triangles
557 / 735
48
The Red and Blue Squares
392 / 577
49
The Smart Cat
661 / 1007
50
The cut number
353 / 487