65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
#include<cstdio>
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#include<iostream>
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#include<cstring>
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#include<cmath>
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using namespace std;
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const double eps=1e-6;
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int dcmp(double x)
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{
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if(fabs(x)<eps)return 0;
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else return x<0?-1:1;
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}
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int main()
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{
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double width,height,door,workers;
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while(scanf("%lf%lf%lf%lf",&width,&height,&door,&workers))
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{
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if(width==0&&height==0&&door==0&&workers==0)break;
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double area=width*height;
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area/=workers;
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double d1=width-door;
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double prex=width;
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double prey=0;
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for(int i=0;i<workers-1;++i)
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{
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double tmp=area;
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double x,y;
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if(dcmp(prey-height)!=0)
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{
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if(dcmp(prex-width)==0)
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{
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x=width;
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y=2*tmp/d1+prey;
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if(y>height)
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{
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tmp-=(height-prey)*d1/2;
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y=height;
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x=width-tmp*2/y;
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}
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}
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else if(dcmp(prex)==0)
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{
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x=0;
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y=prey-2*tmp/door;
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}
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}
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else
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{
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y=height;
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x=prex-tmp*2/height;
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if(x<0)
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{
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tmp=tmp-prex*prey/2;
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x=0;
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y=height-tmp*2/door;
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}
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}
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prex=x;
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prey=y;
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printf("%.3lf %.3lf ",x,y);
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}
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printf("\n");
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}
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return 0;
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}
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