åºé¡:ã€ãªãŽãã¯ãã
()
ããã«ããã«ã«ã¿ããããã®èªã¿æã¯ïŒ
詳现ããŒãž(20)è¡æ¶²åã§ããïŒç¶ãããAåã§æ¯ãããBåã ããããŒãã¯å€åCåã§ãïŒïŒ
ä¹é£ããã®ãã±ã§ããè¡æ¶²åã§ããïŒç¶ãããAåã§æ¯ãããBåã ããããŒãã¯å€åCåã§ãïŒïŒ
ä¹é£ããã®ãã±ã§ãã