CF 303B(Rectangle Puzzle II-离矩形中心欧几里德距离最小的点)

B. Rectangle Puzzle II

time limit per test

2 seconds

memory limit per test

256 megabytes

input

standard input

output

standard output

You are given a rectangle grid. That grid's size is n × m. Let's denote the coordinate system on the grid. So, each point on the grid will have coordinates — a pair of integers (x, y) (0 ≤ x ≤ n, 0 ≤ y ≤ m).

Your task is to find a maximum sub-rectangle on the grid (x₁, y₁, x₂, y₂) so that it contains the given point (x, y), and its length-width ratio is exactly (a, b). In other words the following conditions must hold: 0 ≤ x₁ ≤ x ≤ x₂ ≤ n, 0 ≤ y₁ ≤ y ≤ y₂ ≤ m, .

The sides of this sub-rectangle should be parallel to the axes. And values x₁, y₁, x₂, y₂ should be integers.

If there are multiple solutions, find the rectangle which is closest to (x, y). Here "closest" means the Euclid distance between (x, y) and the center of the rectangle is as small as possible. If there are still multiple solutions, find the lexicographically minimum one. Here "lexicographically minimum" means that we should consider the sub-rectangle as sequence of integers (x₁, y₁, x₂, y₂), so we can choose the lexicographically minimum one.

Input

The first line contains six integers n, m, x, y, a, b (1 ≤ n, m ≤ 10⁹, 0 ≤ x ≤ n, 0 ≤ y ≤ m, 1 ≤ a ≤ n, 1 ≤ b ≤ m).

Output

Print four integers x₁, y₁, x₂, y₂, which represent the founded sub-rectangle whose left-bottom point is (x₁, y₁) and right-up point is(x₂, y₂).

Sample test(s)

input

9 9 5 5 2 1

output

1 3 9 7

input

100 100 52 50 46 56

output

17 8 86 92

Note

The first sample has been drawn on the picture above.

德艺双馨柯老师看错题目卖队友。

这题是求在(0,0)(n,m)中的横边和竖边比为a:b，边平行坐标轴的矩形。

使其：

1.中心尽可能离(x,y)的欧几里德距离近。

2.面积尽量大

3.x1,y1,x2,y2字典序最小

前面的优先级高

如上是柯黑的翻译：

实际上2和1的位置是对调的……

于是,呵呵了

#include<cstdio>#include<cstring>#include<cstdlib>#include<algorithm>#include<functional>#include<iostream>#include<cmath>#include<cstring>#include<cctype>#include<ctime>using namespace std;#define For(i,n) for(int i=1;i<=n;i++)#define Fork(i,k,n) for(int i=k;i<=n;i++)#define Rep(i,n) for(int i=0;i<n;i++)#define Forp(x) for(int p=pre[x];p;p=next[p])int gcd(int a,int b){if (!b) return a;return gcd(b,a%b);}int main(){    int n,m,x,y,a,b,a1,b1;    cin>>n>>m>>x>>y>>a>>b;a1=a,b1=b;    int g=gcd(a,b);a/=g,b/=g;    int wid=n/a,hig=m/b;wid=min(wid,hig);    int x1=0,x2=wid*a,y1=0,y2=wid*b;    int del=x-x2/2-(x2%2),del2=x+x2/2;    if (del2>n) del-=(del2-n),del2=n;    if (del>=0&&del2<=n) x1+=del,x2+=del;    del=y-y2/2-(y2%2),del2=y+y2/2;    if (del2>m) del-=(del2-m),del2=m;    if (del>=0&&del2<=m) y1+=del,y2+=del;    cout<<x1<<' '<<y1<<' '<<x2<<' '<<y2<<endl;    return 0;}