@b=@_;sub X{pop=~X?10:pop}while(($_=shift@b)+1){$t+=10+X(($b[0])x2)+X(($b[1]=~/\//?10-$b[0]:$b[1]),$b[1])and(defined$b[2]||last)if/X/;if($b[0]=~m!/!){$t+=10+X(($b[1])x2)and(defined$b[2]||last)}else{$t+=$_}}$t