BEGIN{
  print "1"+1;
  print 1+"1";
  print "1"+"1";
  print "1a"+1;
  print "a1"+1;
  print "1a"+"1";
  print ""+"1";
  print ""+1;
  print "1a"+"a";
  print "a"+"a";
  print 1;
  print 01;
  print 10;
  print 010;
  print "010";
}