Codeforces Round 279 (Div. 2)
D
Chocolate
Codeforces
1900
原题
← CE →
翻译中…

Polycarpus likes giving presents to Paraskevi. He has bought two chocolate bars, each of them has the shape of a segmented rectangle. The first bar is $*a*_{1} × *b*_{1}$ segments large and the second one is $*a*_{2} × *b*_{2}$ segments large.

翻译中…

Polycarpus wants to give Paraskevi one of the bars at the lunch break and eat the other one himself. Besides, he wants to show that Polycarpus's mind and Paraskevi's beauty are equally matched, so the two bars must have the same number of squares.

翻译中…

To make the bars have the same number of squares, Polycarpus eats a little piece of chocolate each minute. Each minute he does the following:

翻译中…
  • he either breaks one bar exactly in half (vertically or horizontally) and eats exactly a half of the bar,
  • or he chips of exactly one third of a bar (vertically or horizontally) and eats exactly a third of the bar.
翻译中…

In the first case he is left with a half, of the bar and in the second case he is left with two thirds of the bar.

翻译中…

Both variants aren't always possible, and sometimes Polycarpus cannot chip off a half nor a third. For example, if the bar is $16 × 23$, then Polycarpus can chip off a half, but not a third. If the bar is $20 × 18$, then Polycarpus can chip off both a half and a third. If the bar is $5 × 7$, then Polycarpus cannot chip off a half nor a third.

翻译中…

What is the minimum number of minutes Polycarpus needs to make two bars consist of the same number of squares? Find not only the required minimum number of minutes, but also the possible sizes of the bars after the process.

翻译中…

Input

翻译中…

The first line of the input contains integers $*a*_{1}, *b*_{1}$ ($1 ≤ *a*_{1}, *b*_{1} ≤ 10^{9}$) — the initial sizes of the first chocolate bar. The second line of the input contains integers $*a*_{2}, *b*_{2}$ ($1 ≤ *a*_{2}, *b*_{2} ≤ 10^{9}$) — the initial sizes of the second bar.

翻译中…

You can use the data of type int64 (in Pascal), long long (in С++), long (in Java) to process large integers (exceeding $2^{31} - 1$).

翻译中…

Output

翻译中…

In the first line print $*m*$ — the sought minimum number of minutes. In the second and third line print the possible sizes of the bars after they are leveled in $*m*$ minutes. Print the sizes using the format identical to the input format. Print the sizes (the numbers in the printed pairs) in any order. The second line must correspond to the first bar and the third line must correspond to the second bar. If there are multiple solutions, print any of them.

翻译中…

If there is no solution, print a single line with integer -1.

翻译中…

样例

Input #1
2 6
2 3
Output #1
1
1 6
2 3
InputCopy OutputCopy
Input #2
36 5
10 16
Output #2
3
16 5
5 16
InputCopy OutputCopy
Input #3
3 5
2 1
Output #3
-1
InputCopy OutputCopy
题目信息
题号
490D
时间限制
1 s
内存限制
256 MB
标签
暴力
DFS 及类似
数学
折半搜索
数论

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。