BZOJ 1977([BeiJing2010组队]次小生成树 Tree-LCA的位运算)
1977: [BeiJing2010组队]次小生成树 Tree Time Limit: 10 Sec Memory Limit: 64 MBSubmit: 1…
1977: [BeiJing2010组队]次小生成树 Tree Time Limit: 10 Sec Memory Limit: 64 MBSubmit: 1…
已知边,判断2点连通性 要用并查集……千万别搜啊~ Program ee; var edge:array[1..10000,1..3] of longint; …
题目大意:最小生成树 建源点0与各点连线的权为建水库的大小。 Program aa; var n,i,j,p:longint; u,v,w:array[0..1…