A12226. Meme Problem
编程题
普及/提高-
知识点
题目描述
Try guessing the statement from this picture:
You are given a non-negative integer $d$ . You have to find two non-negative real numbers $a$ and $b$ such that $a + b = d$ and $a \cdot b = d$ .
You are given a non-negative integer $d$ . You have to find two non-negative real numbers $a$ and $b$ such that $a + b = d$ and $a \cdot b = d$ .
输入格式
The first line contains $t$ ( $1 \le t \le 10^3$ ) — the number of test cases.
Each test case contains one integer $d$ $(0 \le d \le 10^3)$ .
Each test case contains one integer $d$ $(0 \le d \le 10^3)$ .
输出格式
For each test print one line.
If there is an answer for the $i$ -th test, print "Y", and then the numbers $a$ and $b$ .
If there is no answer for the $i$ -th test, print "N".
Your answer will be considered correct if $|(a + b) - a \cdot b| \le 10^{-6}$ and $|(a + b) - d| \le 10^{-6}$ .
If there is an answer for the $i$ -th test, print "Y", and then the numbers $a$ and $b$ .
If there is no answer for the $i$ -th test, print "N".
Your answer will be considered correct if $|(a + b) - a \cdot b| \le 10^{-6}$ and $|(a + b) - d| \le 10^{-6}$ .
输入输出样例
输入 #1
7 69 0 1 4 5 999 1000
输出 #1
Y 67.985071301 1.014928699 Y 0.000000000 0.000000000 N Y 2.000000000 2.000000000 Y 3.618033989 1.381966011 Y 997.998996990 1.001003010 Y 998.998997995 1.001002005