摘要：
poj 2528 For each input data set print the number of visible posters after all the posters are placed. The picture below illustrates the case of the s 阅读全文
摘要：
poj 3264 Sample Input Sample Output 求任一区间的最大值和最小值的差 poj 3468 Sample Input Sample Output ①对区间i - j 的数全加上c ； ②求区间的和 阅读全文