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Data Structures
Arrays [642]
Strings [389]
Tree [179]
Hash [145]
Matrix [109]
Graph [103]
Stack [75]
Queue [34]
Heap [32]
Map [31]
Trie [19]

Algorithms
Sorting [147]
Bit Magic [123]
Greedy [76]
DFS [49]
Numbers [47]
BFS [35]
sieve [32]

Languages
CPP [56]
Java [47]

Others
STL [59]
Misc [40]
set [12]
subset [6]
LCS [1]