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Omni-MATH / M is an 8×8 matrix. For 1≤i≤8, all entries in row i are at least i, and all entries on column i are at least i. What is the minimum possible sum of the entries of M ? · Discussion

Discussing M is an 8×8 matrix. For 1≤i≤8, all entries in row i are at least i, and all entries on column i are at least i. What is the minimum possible sum of the entries of M ? · Omni-MATH

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