제출 #310668

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
310668	2020-10-07 15:07:14	vipghn2003	공장들 (JOI14_factories)	C++14	15 / 100	8016 ms	114784 KiB

factories

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#include<bits/stdc++.h>
#define fi first
#define se second
#define pii pair<int,int>
#define mp make_pair
using namespace std;
const int N=5e5+5;
int n,m,p[N][21],level[N],up[N],sz[N];
long long mn[N],dep[N];
bool vis[N];
vector<pii>adj[N];
void dfs(int x,int par=-1)
{
    for(int k=1;k<=20;k++) p[x][k]=p[p[x][k-1]][k-1];
    for(auto&u:adj[x])
    {
        if(u.fi==par) continue;
        p[u.fi][0]=x;
        dep[u.fi]=dep[x]+u.se;
        level[u.fi]=level[x]+1;
        dfs(u.fi,x);
    }
}
int lca(int x,int y)
{
    if(level[x]>level[y]) swap(x,y);
    int diff=level[y]-level[x];
 
 
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