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def matrix_multiply(A, B): m = len(A) n = len(A[0]) p = len(B[0]) if n != len(B): return "Invalid dimensions for matrix multiplication" C = [[0 for _ in range(p)] for _ in range(m)] for i in range(m): for j in range(p): for k in range(n): C[i][j] += A[i][k] * B[k][j] return C