开发一个坐标计算工具， A表示向左移动，D表示向右移动，W表示向上移动，S表示向下移动。从（0,0）点开始移动，从输入字符串里面读取一些坐标，并将最终输入结果输出到输出文件里面。-Develop A coordinate calculation tool, A for moving to the left, D said to the right, W represents moving up, S moves down.Began to move　(0, 0), read　the input string inside some coordinates, and will finally enter the results output to the output file.