Introduction - If you have any usage issues, please Google them yourself
Find an arbitrary mn matrix saddle point- saddle point is the element that position the line for the biggest, the smallest on the column, you may not have a saddle point in the matrix, but only up to a saddle point. m, n (2 < = m < = 20,2 < = n < = 20) and the matrix elements from the keyboard input (considering only the int type and each row, each column is not tied Max/Min situation).