peiyinsong @ 2024-04-14 16:25:17
#include<bits/stdc++.h>
using namespace std;
priority_queue<pair<int,int>,vector<pair<int,int> >,greater<pair<int,int> > >q;
vector<int>a[200005],w[200005];
int dis[100005];
bool pan[100005];
void dj(int s)
{
q.push({0,s});
while(!q.empty())
{int u=q.top().second;
q.pop();
if(pan[u])continue;
pan[u]=1;
for(int i=0;i<a[u].size();i++)
{
if((!pan[a[u][i]])&&(dis[a[u][i]]>dis[u]+w[u][i]))
{
dis[a[u][i]]=dis[u]+w[u][i];
q.push( { dis[a[u][i]],a[u][i] } );
}
}
}
}
int main()
{
int n,m,s;
cin>>n>>m>>s;
for(int i=0;i<m;i++)
{
int o,p,l;
cin>>o>>p>>l;
a[o].push_back(p);
w[o].push_back(l);
}
for(int i=0;i<=n;i++)
{
pan[i]=0;
dis[i]=12345678;
}
dis[1]=0;
dj(1);
for(int i=1;i<=n;i++)
{
cout<<dis[i]<<" ";
}
return 0;
}
by __ryp__ @ 2024-04-14 18:00:28
@peiyinsong 12345678
太小了,改成 1e9
就过了
by peiyinsong @ 2024-04-14 18:10:54
@intirain 感谢大佬