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Problems

Simple
All Problems Very simple Simple Average Difficult Very difficult
Classification
All Problems ---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 diophantine-equations Others...
1
Simple problem
51531 / 57557
2
Digits
29473 / 37347
7
Roman numerals
3191 / 4559
10
Gardener
3299 / 4531
14
Rabbit-failure
1844 / 2459
15
Mouse and corns
4275 / 5548
17
Gardener-painter
4142 / 5312
19
Degree of symmetry
7528 / 8894
26
New-year presents
1462 / 1931
27
Cycle shifts
4501 / 5448
29
The level of palindrome
2363 / 3249
31
Superstitious Santa Claus
1237 / 1466
34
The word of sponsor
1432 / 1825
37
Mail of the sponsor
1026 / 1268
39
Sponsor’s money
430 / 607
43
Competitors’ quantity of olimpia
2838 / 3909
44
The number of ones
2745 / 3896
45
The Fuel
158 / 222
46
The Segments
1312 / 1712
47
The Parquet of the Triangles
662 / 856
51
The Cost of the K-dominoes
853 / 989
52
The Cheese for Anfisa
900 / 1108
57
The Butterfly – Medical Attendan
3789 / 4220
58
The Billiards
1113 / 1493
60
Area of a Polygon
2805 / 3557