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Problems

Complexity
All Problems Very simple Simple Average Difficult Very difficult
simple-mathematics
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
51525 / 57553
3
Match’s model
3791 / 17532
58
The Billiards
1113 / 1493
63
Anfisa and the flowers
6897 / 8147
67
Cheese for Anfisa - 2
4007 / 4495
109
Page numbering
3555 / 4868
111
Clocks
1510 / 2263
116
Long number (RU)
672 / 1173
117
Raft
1124 / 1417
119
Degree of two
1952 / 2575
127
Dollars in bank
2547 / 3443
132
Broken line (RU)
86 / 261
133
Square and points (RU)
6546 / 7268
140
Financial pyramid (RU)
877 / 1150
186
Egyptian symbols
584 / 780
219
Central heating
6031 / 7065
255
License Software
2085 / 2650
273
Modular Exponentiation
4475 / 5894
583
Airplane (RU)
163 / 595
933
The sum of digits of a two-digit number
8835 / 10991
935
Decomposition of three digit number
12512 / 14167
936
Cramer's Formula
2196 / 2749
937
Product of Array Except Self
4073 / 5702
942
Diagonals
3362 / 3722
1005
Matches for children are not toys!
945 / 1212