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Problems

Average
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...
10909
Bubbles and Buckets
4 / 8
4
Two circles
8251 / 13366
6
The vouchers
1288 / 2037
8
Matches
4365 / 6494
9
N-digit numbers
3139 / 4705
11
Big accuracy
3779 / 6138
12
Injured Picture
802 / 1242
13
Spider and Fly
1526 / 2776
16
Dragon
1643 / 2616
20
How many times to repeat?
5129 / 7662
22
"Mirror prime" numbers
2713 / 4851
25
Paint3D
557 / 838
33
The favourite numbers of Santa Claus
1681 / 2580
36
Gorynych the Dragon
1211 / 1731
40
Pipeline (RU)
246 / 443
41
Command of the Mayor
418 / 632
44
The number of ones
2329 / 3432
45
The Fuel
144 / 208
48
The Red and Blue Squares
409 / 601
49
The Smart Cat
695 / 1058
50
The cut number
364 / 524
55
The presents to the 8th of March
709 / 1139
62
The Factorial
1868 / 3620
84
Transfer
37 / 62
88
LeChuck’s Revenge
68 / 109