摘要：
http://acm.hdu.edu.cn/showproblem.php?pid=5124linesProblem Description：John has several lines. The lines are covered on the X axis. Let A is a point w... 阅读全文
摘要：
Given the value of N, you will have to find the value of G. The definition of G is given below:Here GCD(i, j) means the greatest common divisor of int... 阅读全文