1682: [Usaco2005 Mar]Out of Hay 干草危机 Time Limit: 5 Sec Memory Limit: 64 MBSubmit: 391 Solved: 258[Submit][Status] Description The cows have run out of hay, a horrible event that must be remedied immediately. Bessie intends to visit the other farms…
二分答案,把边权小于mid的边的两端点都并起来,看最后是否只剩一个联通块 #include<iostream> #include<cstdio> using namespace std; const int N=2005; int n,m,f[N]; struct qwe { int u,v,w; }a[N*5]; int read() { int r=0,f=1; char p=getchar(); while(p>'9'||p<'0') { if(p=='-') f…
1680: [Usaco2005 Mar]Yogurt factory Time Limit: 5 Sec Memory Limit: 64 MBSubmit: 106 Solved: 74[Submit][Status][Discuss] Description The cows have purchased a yogurt factory that makes world-famous Yucky Yogurt. Over the next N (1 <= N <= 10,000)…