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Flat Women's Ballet Black Fleece DAWGS qwH8YxtFq

Flat Women's Ballet Black Fleece DAWGS qwH8YxtFq Flat Women's Ballet Black Fleece DAWGS qwH8YxtFq Flat Women's Ballet Black Fleece DAWGS qwH8YxtFq Flat Women's Ballet Black Fleece DAWGS qwH8YxtFq Flat Women's Ballet Black Fleece DAWGS qwH8YxtFq Flat Women's Ballet Black Fleece DAWGS qwH8YxtFq

Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.

Example:

Input: n = 4, k = 2
Output:
[
  [2,4],
  [3,4],
  [2,3],
  [1,2],
  [1,3],
  [1,4],
]

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C++

Compiled with g++ 6.3 using the latest C++ 14 standard.

Your code is compiled with level one optimization (-O1). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.

Most standard library headers are already included automatically for your convenience.

OK