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Data Structures
Arrays [623]
Strings [382]
Tree [176]
Hash [145]
Matrix [106]
Graph [98]
Stack [71]
Queue [34]
Heap [32]
Map [29]
Trie [19]

Algorithms
Sorting [141]
Bit Magic [122]
Greedy [69]
Numbers [47]
DFS [45]
BFS [33]
series [31]

Languages
CPP [56]
Java [47]

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