自己研究的小底，没事做做统计，看看准确率怎么样。

018.038.128.238.168.178.368.378.015.035.058.125.235.258.017.023.028.025.027.127.036.236.068.014.019.049.124.129.249.145.146.159.169.047.079.247.279.024.029.046.246.069.269.349.489.459.469.247.347.478.789.348.389.235.345.359.458.589