#107 · #554 · Brick Wall(砖墙)

There is a rectangular brick wall made of rows of bricks of varying widths but the same height. Draw a vertical line from the top to the bottom that crosses the fewest bricks. Return that minimum number. The line must not run along an edge at either end of the wall. Constraints: 1 <= wall.length <= 10^4, 1 <= wall[i].length <= 10^4, 1 <= wall[i][j] <= 2^31 - 1.