Chef and Number Guessing

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Chef has a rectangular matrix A of nxm integers. Rows are numbered by integers from 1 to n from top to bottom, columns - from 1 to m from left to right. Ai, j denotes the j-th integer of the i-th row. Chef wants you to guess his matrix. To guess integers, you can ask Chef questions of next type: "How many integers from submatrix iL, iR, jL, jR are grater than or equal to x and less than or equal

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solution.cppC++17

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