#include<cstdio>

int x,y,z,n;
double T1,T2;

int main() {
  scanf("%d %d %d %d",&x,&y,&z,&n);
  for (int r=1;r<=n;r++) {
	T1=double(x)*(r-1)/n;
	T2=double(x)*r/n;
	printf("%.8lf %d %d %.8lf %d %d\n",T1,y,z,T2,y,z);
  }
  return 0;
}