9.2.2

//
//  main.cpp
//  luogu9.2.2
//
//  Created by Candy on 9/24/16.
//  Copyright © 2016 Candy. All rights reserved.
//

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<queue>
using namespace std;
const int N=1e5+5,M=2e5+5,INF=1e9;
int read(){
    char c=getchar();int x=0,f=1;
    while(c<‘0‘||c>‘9‘){if(c==‘-‘)f=-1; c=getchar();}
    while(c>=‘0‘&&c<=‘9‘){x=x*10+c-‘0‘; c=getchar();}
    return x*f;
}
struct edge{
    int v,w,ne;
}e[(M<<1)+N];
int h[N<<1],cnt=0;
void ins(int u,int v,int w){
    cnt++;
    e[cnt].v=v;e[cnt].w=w;e[cnt].ne=h[u];h[u]=cnt;
    cnt++;
    e[cnt].v=u;e[cnt].w=w;e[cnt].ne=h[v];h[v]=cnt;
}
int n,m,k,s,p,qq,tmp,u[M],v[M];
int g[N],c[N],lst[N],num=0;//danger ceng
void dfs(int u,int d){//printf("dfs %d %d\n",u,d);
    if(d==0) return;
    for(int i=h[u];i;i=e[i].ne){
        int v=e[i].v;//printf("v %d\n",v);
        c[v]=d-1; g[v]=1;
        if(c[v]>=d-1) continue;
        dfs(v,d-1);
    }
}
void build(){
    cnt=0;memset(h,0,sizeof(h));
    ins(1,1+n,0);ins(n,n+n,0);
    for(int i=2;i<=n-1;i++){
        if(g[i]) ins(i,i+n,qq);
        else ins(i,i+n,p);
    }
    for(int i=1;i<=m;i++){
        ins(u[i]+n,v[i],0);
        ins(v[i]+n,u[i],0);
    }
}
struct hn{
    int u,d;
    bool operator <(const hn &rhs)const{return d>rhs.d;}
};
int d[N],done[N];
priority_queue<hn> q;
void dijkstra(int s){
    for(int i=1;i<=n<<1;i++) d[i]=INF;
    d[s]=0;q.push((hn){s,0});
    while(!q.empty()){
        hn x=q.top();q.pop();
        int u=x.u;
        if(done[u]) continue;
        done[u]=1;
        for(int i=h[u];i;i=e[i].ne){
            int v=e[i].v;
            if(d[v]>d[u]+e[i].w){
                d[v]=d[u]+e[i].w;
                q.push((hn){v,d[v]});
            }
        }
    }
}
int main(int argc, const char * argv[]) {
    n=read();m=read();k=read();s=read();
    p=read();qq=read();
    for(int i=1;i<=k;i++){
        tmp=read();lst[++num]=tmp;g[tmp]=1;c[tmp]=s;
    }
    for(int i=1;i<=m;i++){
        u[i]=read();v[i]=read();ins(u[i],v[i],0);
    }
    for(int i=1;i<=k;i++) dfs(lst[i],s);
    build();
    dijkstra(1);
    for(int i=1;i<=n<<1;i++) printf("d %d\n",d[i]);
    printf("%d",d[n+n]);
    return 0;
}
时间: 2024-10-05 06:33:33