看书的时候被一段代码能凌乱啦,代码是这样的: package 继承; abstract class People { public String tag = "疯狂Java讲义"; //① public String name = "Parent"; String getName(){ return name; } } class Student extends People { //定义一个私有的tag实例变量来隐藏父类的tag实例变量 String tag =
C. The Tag Gametime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputAlice got tired of playing the tag game by the usual rules so she offered Bob a little modification to it. Now the game should be play
[传送门]http://codeforces.com/problemset/problem/813/C [题意]给定整数a,b,c,s,求使得 xa yb zc值最大的实数 x,y,z , 其中x + y + z <= s. (1 ≤ S ≤ 103 , 0 ≤ a, b, c ≤ 103) [题解]设P(x,y,z ) = xa yb zc,则P(x,y,z)是递增的,要使 函数值尽可能地大,那么必取 x + y + z = s 问题转化成:已知限定条件 x + y + z = s, 求