Revert "五子棋"

This reverts commit bbcef201124934d596382977645b7b38a8f00a73.
Revert "Revert "五子棋""

This reverts commit 6f663bd7ec8840a01d3f554f4d2fa3e9b6fefd1a.
五子棋

一个五子棋程序