全 wa,但能过样例。。。
求调,或给组 hack 也行。
#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=100200;
int n,m,x,y,z,h[N],dis[N],cnt,ans;
bool mark[N];
struct node{
int id,high;
};
bool operator <(const node &a,const node &b)
{
if(a.high!=b.high)return a.high<b.high;
return dis[a.id ]>dis[b.id ];
}
vector<node>g[N];
priority_queue<node>q;
void prim(){
while(q.size()){
node now=q.top();
q.pop();
int x=now.id,d=dis[x];
if(mark[x])continue;
mark[x]=true;
ans+=d;
cnt++;
for(int i=0;i<g[x].size();i++){
if(dis[g[x][i].id]>g[x][i].high){
dis[g[x][i].id]=g[x][i].high;
if(!mark[g[x][i].id])q.push((node){g[x][i].id,h[g[x][i].id]});
}
}
}
}
signed main(){
memset(dis,0x7f,sizeof(dis));
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)scanf("%d",&h[i]);
for(int i=1;i<=m;i++){
scanf("%d%d%d",&x,&y,&z);
if(h[x]==h[y])continue;
if(h[x]<h[y])swap(x,y);
g[x].push_back((node){y,z});
}dis[1]=0;
q.push((node){1,h[1]});
prim();
printf("%lld %lld",cnt,ans);
return 0;
}