watermelon的专栏

记住 在pop之前 要先判断 是否 empty。runtime error 了 三次。 #include #include #include #include using namespace std; stack st; queue qu; priority_queue p_max; //priority_queue , greater > p_min; int flag_

Easy Problem from Rujia Liu? Though Rujia Liu usually sets hard problems for contests (for example, regional contests like Xi'an 2006, Beijing 2007 and Wuhan 2009, or UVa OJ contests like Rujia L