or download this
for(0..$#_){if($_[$_]=~/X/){$t+=10+($_[$_+1]=~/X/?10:$_[$_+1])+($_[$_+
+2]=~/X/?10:($_[$_+2]=~/\//?10-$_[$_+1]:$_[$_+2]))}if($_[$_+1]=~/\//){
+$t+=10+($_[$_+2]=~/X/?10:$_[$_+2]);splice@_,$_+1,1;last if!defined$_[
+$_+2]}else{$t+=$_[$_]}}$t