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本题不用并查集 直接用差分就可以了 另In Reply To:并查集我不会 :( 请教 Posted by:fluke at 2006-08-31 16:53:48 你这个并查集不是O(1)的算法 没有合并 struct SET { int p[maxn]; void init() { for (int i=0;i<maxn;i++) p[i]=i; } int find(int a) { if (a!=p[a]) p[a]=find(p[a]); return p[a]; } void merge(int a,int b) { p[find(b)]=find(a); } }; Followed by:
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