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
877 / 1226
27
Cycle shifts
3783 / 4642
28
Product
556 / 1318
29
The level of palindrome
1834 / 2581
30
Certification
98 / 239
31
Superstitious Santa Claus
1083 / 1289
32
Queen and pawn
152 / 419
33
The favourite numbers of Santa Claus
1556 / 2383
34
The word of sponsor
1072 / 1404
35
Triangles from Matches
529 / 1436
36
Gorynych the Dragon
1122 / 1595
37
Mail of the sponsor
756 / 979
38
Firs conversation
93 / 214
39
Sponsor’s money
387 / 543
40
Pipeline (RU)
245 / 434
41
Command of the Mayor
409 / 613
42
Green spot
97 / 255
43
Competitors’ quantity of olimpia
2539 / 3468
44
The number of ones
2066 / 3100
45
The Fuel
130 / 190
46
The Segments
1211 / 1560
47
The Parquet of the Triangles
530 / 698
48
The Red and Blue Squares
378 / 560
49
The Smart Cat
648 / 984
50
The cut number
333 / 455