import std.algorithm, std.conv, std.range, std.stdio, std.string;

void main()
{
  auto ans = int.max;
  auto x = 50000, y = 50000;
  auto xi = 0, xa = 100000, yi = 0, ya = 100000;

  for (;;) {
    writeln(xi, " ", y);
    auto ri = readln.chomp.to!int;

    writeln(xa, " ", y);
    auto ra = readln.chomp.to!int;

    writeln(x, " ", y);
    auto r = readln.chomp.to!int;
    
    if (xa - xi <= 2) {
      if (x <= xa && x <= xi) {
        break;
      } else if (xi <= x && xi <= xa) {
        x = xi;
        break;
      } else {
        x = xa;
        break;
      }
    } else {
      if (xi >= xa) {
        xi = x;
        x = (xa - xi) / 2;
      } else {
        xa = x;
        x = (xa - xi) / 2;
      }
    }
  }
    
  for (;;) {
    writeln(x, " ", yi);
    auto ri = readln.chomp.to!int;

    writeln(x, " ", ya);
    auto ra = readln.chomp.to!int;

    writeln(x, " ", y);
    auto r = readln.chomp.to!int;

    if (yi >= ya) {
      yi = y;
      y = (ya - yi) / 2;
    } else {
      ya = y;
      y = (ya - yi) / 2;
    }
  }
}