Mike and Matrices

CodeChefRating 1482Open on judge ↗

Mike is given a matrix A, N and M are numbers of rows and columns respectively. A1, 1 is the number in the top left corner. All the numbers in A are non-negative integers. He also has L pairs of integers (ik, jk). His task is to calculate Ai1, j1 + Ai2, j2 + ... + AiL, jL. Unfortunately, Mike forgot if Ai, j was a number in the i'th row and j'th column or vice versa, if Ai, j was a number in the

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solution.cppC++17

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