JJ104，求教

佟佳雁衡

N is perfect square, means N=m2, which following number is least biggest perfect square of N

a) N2 b) N+2N^(1/2) c) N+2^(1/2)+1 d)..

（提供者ID：bbdxm2010。选c）

思路:是求最小的完全平方数吧

只要比可以匹配成（）^2的。然后比（）里面的大小就可以。

看不懂思路，
which following number is least biggest perfect square of N是啥意思？