
ZOJ Problem Set  2330
Solve the equation in the name of this problem. Input There are several cases. Each of them has a single real number as the smaller one of a and b in the equation on a separate line. You may assume it's no smaller than 1.1. Proceed until the end of file. Output For each case, print the other number on a single line. Keep 5 digits after decimal point. If no such number exists, print 1. Sample Input 210 Sample Output
4.00000 Author: PAN, Minghao Source: ZOJ 3rd Anniversary Contest 