省流：leo又双叒叕被卡常了
In English:On 14:50,After 47 minutes' thinking,writting and debuging,leo submit his code as soon as he passed the example test.But,he found that his code got 95 pts in the real test,and the task he didn't pass returned 'Time Limit Exceeded' A~G~A~I~N......(Apparently,leo ensures that the time complexity is correct.)
又要卡常了.......
代码在这里
话说回来，我的常数理论上来说不大啊
