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Problems

Complexity
All Problems Very simple Simple Average Difficult Very difficult
Classification
All Problems ---topological-sort- ---traveling-salesman-problem- -three- 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 Others...
26
New-year presents
1137 / 1556
27
Cycle shifts
4121 / 5013
28
Product
587 / 1387
29
The level of palindrome
2062 / 2892
30
Certification
101 / 242
31
Superstitious Santa Claus
1162 / 1381
32
Queen and pawn
155 / 439
33
The favourite numbers of Santa Claus
1643 / 2528
34
The word of sponsor
1227 / 1582
35
Triangles from Matches
597 / 1574
36
Gorynych the Dragon
1185 / 1688
37
Mail of the sponsor
849 / 1078
38
Firs conversation
93 / 219
39
Sponsor’s money
405 / 572
40
Pipeline (RU)
245 / 440
41
Command of the Mayor
415 / 628
42
Green spot
98 / 262
43
Competitors’ quantity of olimpia
2691 / 3690
44
The number of ones
2231 / 3298
45
The Fuel
143 / 204
46
The Segments
1251 / 1618
47
The Parquet of the Triangles
573 / 757
48
The Red and Blue Squares
402 / 591
49
The Smart Cat
676 / 1030
50
The cut number
364 / 514