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![Count Square Submatrices with All Ones | Day 21 | [May LeetCoding Challenge] [Leetcode 1277] [2020]](/_next/image?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2FP5Fw7oD8VR0%2Fhq720.jpg%3Fsqp%3D-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE%3D%26rs%3DAOn4CLAkNDgGyZRdYnmq0Vlz6NmEfiNveg&w=256&q=75)
