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Problems

Complexity
All Problems Very simple Simple Average Difficult Very difficult
beginners
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...
1
Simple problem
42908 / 48010
407
Exchange
5441 / 6075
500
Repair
4401 / 5263
583
Airplane (RU)
151 / 519
803
Абзац
48 / 133
901
Number of operations
6227 / 7153
902
The level of educational achievements
13997 / 15052
903
First or last?
13665 / 14938
904
Increase by 2
9888 / 11421
905
What type of triangle?
12263 / 13540
906
Product of digits
16282 / 17100
907
The first is not greater for 2,5
6420 / 7429
908
Those that are divisible by 6
7198 / 8292
909
Number of words
6165 / 6823
910
The arithmetic mean of positive
7879 / 8950
911
Quadratic equation
5289 / 7681
912
Number of sentences
3340 / 4578
913
Use sub-program
3213 / 3554
914
Maximum of absolute values
6840 / 7913
915
Rectangular or not?
8558 / 9605
916
Interesting Product
2443 / 3047
917
Twice the minimum
6719 / 7269
918
Which quarter?
8444 / 9969
919
Number by 3
5778 / 6334
920
Use the function
4500 / 4987