>>19
åã£ãŠãªããã¬ãã«äºã€ãšã²ãæ¿ã«äžã€ãšããããããä»ã®åœŒæ°ã¯é¢è¥¿ç€ã®ã¬ããã
ã¯ããŒã³é¬Œå€ªé(N)ãšã¹ã¿ã³ããªãã®2ã·ã§åºããŠç¹æ³šã®è±ãã©ã€ãåŸã®å®¶ã®äžã§åã¡ããŠåãç¿æã£ãŠãã®ã«ããžã¥ã¢ã«ç³»(ç¬)æ¬å®¶ã§è©±é¡ã«ãªã£ããšããã«å¥äººã ãšèšãã ã(ã¹ã¿ã³ãã§é ããŠãšããã®èšãåéãããã©...)ãããã¯ç¢ºå®ãããªããã©æãããããæ¬äººãç»åã¯å¥äººã ïŒè±ã¯ããŸããŸã ïŒãšæžããŠè©±ãåãããã£ãŠãæ§åâããŸãã