e-olymp
favorite We need a little bit of your help to keep things running, click on this banner to learn more

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
7562 / 12242
6
The vouchers
1200 / 1888
8
Matches
3975 / 5946
9
N-digit numbers
2819 / 4273
11
Big accuracy
3573 / 5637
12
Injured Picture
752 / 1168
13
Spider and Fly
1400 / 2559
16
Dragon
1532 / 2420
20
How many times to repeat?
4724 / 7002
22
"Mirror prime" numbers
2443 / 4454
25
Paint3D
531 / 792
33
The favourite numbers of Santa Claus
1585 / 2448
40
Pipeline (RU)
245 / 436
41
Command of the Mayor
411 / 623
44
The number of ones
2126 / 3175
45
The Fuel
136 / 196
48
The Red and Blue Squares
392 / 577
49
The Smart Cat
661 / 1007
55
The presents to the 8th of March
682 / 1096
62
The Factorial
1586 / 3155
64
The Timetable from "Diez-Product"
121 / 174
84
Transfer
31 / 55
88
LeChuck’s Revenge
51 / 88
93
Truck Driving
55 / 97
94
Primes’ Problem
31 / 57