Please help me fill this list on how to improve to 1000 rating.
Things I know :
Input/output
Variables and loops
Array
Vectors
Maps
Sets
Functions
String
Pointers
GCD/LCM
Please let me know what topics should I cover
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If you know how to use STL (C++) properly, you will reach 1000. You don't need to study a specific topic, but if you want to, I recommend focusing on Greedy and Binary Search problems.