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An (interesting, short) query-update problem
You are given an array of size N.
Update operation : < X, Y, L, R > : Add value Y to every X th element in [ L , R ].
Query operation : < X > : Return the value at position X .
Sample: Given array [1, 2, 3, 4, 5, 6]
1. update 2 1 2 5
The array will be transormed to [1, 2, (3 + 1), 4, (5 + 1), 6]
Any thoughts on the best time complexity we can achieve for the operations (online)?
