作业帮谁能帮我解释下这道ACM题的题意“containing a pair of integers i and j,indicating that person i has heard tree j fall.”“包含一对整数I和J,指的是第I人听到第J棵树倒下”.“Two people hold the same opinion only if they
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谁能帮我解释下这道ACM题的题意“containing a pair of integers i and j,indicating that person i has heard tree j fall.”“包含一对整数I和J,指的是第I人听到第J棵树倒下”.“Two people hold the same opinion only if they
谁能帮我解释下这道ACM题的题意
“containing a pair of integers i and j,indicating that person i has heard tree j fall.”
“包含一对整数I和J,指的是第I人听到第J棵树倒下”.
“Two people hold the same opinion only if they hear exactly the same set of trees.”
“只有当两个人听到完全相同的两棵树倒下,才能说他们的观点相同”.
如果上述理解无误的话,谁能解释下Sample Input里数据的含义,为什么PERSON 1,2,3各出现两次?（例如“1 2”和“1 3”）
谁能帮我解释下这道ACM题的题意“containing a pair of integers i and j,indicating that person i has heard tree j fall.”“包含一对整数I和J,指的是第I人听到第J棵树倒下”.“Two people hold the same opinion only if they
“Two people hold the same opinion only if they hear exactly the same set of trees. ”
“只有当两个人听到完全相同的两棵树倒下,才能说他们的观点相同”.
这里你理解有误,不是听到完全相同的两颗树,而是听到完全相同的树的集合.比如1听到2,3的声音,2也只听到2,3的声音,那没1和2观点相同.如果2听到2,4或者2,3,4的话他们观点就不同了
一个人可以听到很多树的声音,一颗树的声音也可以被很多人听到.所以会有后面的输入