A.Eming
Eming is a contest hold by WHUACM training team. The aim is to select new members of the team.
Usually, the first problem is a very simple problem such as “a+b problem”. But this time, Xioumu is tired of this kind of problem, he decide to solve “a and b problem”.
Give you the result of a + b and a^2 – b^2, please output the result of a and b.
Input
There are several test cases. For each case there are two double numbers indicating a+b and a^2-b^2. You may assume that a+b will not be zero.
Output
For each case please output the result of a and b in one line, rounded to 2 decimal places.
Sample Input
3 -3
Sample Output
1.00 2.00
#include <iostream> #include <stdio.h> using namespace std; int main() { double x, y; while(scanf("%lf %lf", &x, &y)!=EOF){ printf("%.2lf %.2lf\n", x/2+y/(2*x), (x*x-y)/(2*x)); } return 0; }
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