题目描述
Problem Statement
You are given a positive real number r less than 1, and a positive integer N.
Among the pair of integers (p,q) such that $0\leq p\leq q\leq N$ and $\gcd(p,q)=1,$ find the one that minimizes $\left\vert r-\dfrac pq\right\vert$.
If multiple such pairs (p,q) exist, print the one with the smallest value of $\dfrac$ pq.
Input
The input is given from Standard Input in the following format:
r
N
Output
For the pair (p,q) that satisfies the conditions in the problem statement, print p and q in this order, separated by a space, in a single line.
Constraints
- $0\lt r\lt 1$
- r is given as a real number with at most 18 decimal places.
- $1\leq N\leq 10^{10}$
- N is an integer.
Sample Input 1
0.333
33
Sample Output 1
1 3
$\left\vert0.333-\dfrac13\right\vert=\dfrac1{3000}$.
There is no $0\leq p\leq q\leq33,\gcd(p,q)=1$ such that $\left\vert0.333-\dfrac pq\right\vert\lt\dfrac1{3000}$, so print 1 3.
Sample Input 2
0.45
5
Sample Output 2
2 5
$\left\vert0.45-\dfrac12\right\vert=\left\vert0.45-\dfrac25\right\vert=\dfrac1{20}$.
There is no $0\leq p\leq q\leq5,\gcd(p,q)=1$ such that $\left\vert0.45-\dfrac pq\right\vert\lt\dfrac1{20}$, and we have $\dfrac12\gt\dfrac25$, so print 2 5.
Sample Input 3
0.314159265358979323
10000
Sample Output 3
71 226
$\left\vert0.314159265358979323-\dfrac{71}{226}\right\vert=\dfrac{3014435336501}{113000000000000000000}$.
Sample Input 4
0.007735339533561113
7203576162
Sample Output 4
34928144 4515398949
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分