add override keyword
add suanko
include <vector>
add daisangen
remove cout for debug
toitsu is composed of 2 hai
add sushiho
add tsuiso
modify include file name
add sukantsu
add chinroto
begin a new line at new winhand
add ryuiso
remove unnecessary semicolon
debug ryuiso condition
add churenpoto
remove line
add chinitsu