e-olymp
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Problems

Average
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...
4
Two circles
7349 / 11891
6
The vouchers
1134 / 1792
8
Matches
3777 / 5676
9
N-digit numbers
2710 / 4119
11
Big accuracy
3506 / 5467
12
Injured Picture
717 / 1125
13
Spider and Fly
1350 / 2486
16
Dragon
1479 / 2332
20
How many times to repeat?
4572 / 6750
22
"Mirror prime" numbers
2325 / 4275
25
Paint3D
511 / 768
33
The favourite numbers of Santa Claus
1556 / 2383
40
Pipeline (RU)
245 / 434
41
Command of the Mayor
409 / 613
44
The number of ones
2066 / 3100
45
The Fuel
130 / 190
48
The Red and Blue Squares
378 / 560
49
The Smart Cat
648 / 984
55
The presents to the 8th of March
678 / 1086
62
The Factorial
1494 / 2982
64
The Timetable from "Diez-Product"
121 / 174
71
The Expression from the Numbers
138 / 199
84
Transfer
28 / 52
88
LeChuck’s Revenge
46 / 82
93
Truck Driving
51 / 92