import std.algorithm, std.container, std.conv, std.math, std.range, std.typecons, std.stdio, std.string;

auto rdsp(){return readln.splitter;}
void pick(R,T)(ref R r,ref T t){t=r.front.to!T;r.popFront;}
void readV(T...)(ref T t){auto r=rdsp;foreach(ref v;t)pick(r,v);}
void readS(T)(size_t n,ref T t){t=new T(n);foreach(ref v;t){auto r=rdsp;foreach(ref j;v.tupleof)pick(r,j);}}

void main()
{
  int n; readV(n);
  struct F { int a, b; }
  F[] f; readS(n, f);

  f.sort!"a.a*b.b>b.a*a.b";

  foreach (fi; f) writeln(fi.a, " ", fi.b);
}