##
sub bowl {
$_=pop; # 7
$a=()=/\d\d\B/g; # 16
s#(?=./(.)|X(..))#$a++<9&&($2||$1)#ge; # 38
s#./|X#55#g; # 12
s/\B/+/g; # 9
eval # 4
}
# ___
# 86
##
##
sub bowl {
$_=pop; # 7
m#(./(?=(.)(?{$_.=$2}))|X(?=(..)(?{$_.=$3}))|..){9}#;
# 53
s#./|X#55#g; # 12
s/\B/+/g; # 9
eval # 4
}
# ___
# 85