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Data Structures
Arrays [581]
Strings [364]
Tree [164]
Hash [136]
Matrix [99]
Graph [81]
Stack [59]
Queue [33]
Heap [29]
Map [27]

Algorithms
Bit Magic [121]
Greedy [54]
Numbers [47]
series [31]
sieve [30]

Languages
CPP [58]
Java [49]

Others
STL [60]
Misc [40]
OOP [15]
set [10]