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#! perl -slw
use strict;
...
else {
    print "No solution existed for the $N element set @set";
}

C:\test>1031699 -N=1e1
sum( 7 1 ) == sum( 5 3 )
...
Took 0.000238 seconds
No solution existed for the 1e4 elemet set 60 ...72 43 21 61 24 16