{"kind":"task","effective_mode":"full","benchmark":{"kind":"benchmark","effective_mode":"full","slug":"ds-1000","formal_name":"DS-1000","introduction":"DS-1000 builds 1,000 data-science problems from real StackOverflow questions across seven libraries including NumPy, Pandas and Matplotlib. The problems are perturbed so that recalling the original answer does not solve them.","introduction_ja":"","introduction_en":"","category":"Category not supplied","task_count":null,"acquisition_status":"Acquisition status not supplied","official_url":"https://ds1000-code-gen.github.io/","indexing_mode":"index","profile":{"resources":[],"task_format":"","scoring":"","metric":"","size":"","answer_access":"","license":"","citation":"","maintainer":"","released":"","why_hard":"","related":[],"history":"","construction":"","limitations":"","saturation":"","scores":[]}},"task_id":"a3d1504b-db4f-5420-b7d7-4e018a9fab07","task_key":"default--test--481","task_revision_id":"1","upstream_id":"481","short_description":"I have two numpy arrays x and y","config":"default","split":"test","body":"{\"library\":\"Numpy\",\"prompt\":\"Problem:\\nI have two numpy arrays x and y\\nSuppose x = [0, 1, 1, 1, 3, 1, 5, 5, 5] and y = [0, 2, 3, 4, 2, 4, 3, 4, 5]\\nThe length of both arrays is the same and the coordinate pair I am looking for definitely exists in the array.\\nHow can I find indices of (a, b) in these arrays, where a is an element in x and b is the corresponding element in y.I want to take an increasing array of such indices(integers) that satisfy the requirement, and an empty array if there is no such index. For example, the indices of (1, 4) would be [3, 5]: the elements at index 3(and 5) of x and y are 1 and 4 respectively.\\nA:\\n<code>\\nimport numpy as np\\nx = np.array([0, 1, 1, 1, 3, 1, 5, 5, 5])\\ny = np.array([0, 2, 3, 4, 2, 4, 3, 4, 5])\\na = 1\\nb = 4\\n</code>\\nresult = ... # put solution in this variable\\nBEGIN SOLUTION\\n<code>\\n\"}","display_format":"code","language":"","answer_status":"published","assets":[],"source_url":"https://ds1000-code-gen.github.io/","history":"initial import","indexing_mode":"index","subproblems":[],"grids":[]}