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";
}
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