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use strict;
use warnings;
...
    return $result;
  }
};

problem 1: If X=2 and Y=5, what is (X + Y)^2 ?
    evaluating: CODE(0x814ec28) + CODE(0x818a8c0) => 7
...
    evaluating: CODE(0x814ec28) + CODE(0x818a8c0) => 16
    evaluating: CODE(0x8183650)*CODE(0x8183524) => 256
hey! you got it right: the answer is Z = 256