可爱萌新刚学OI,DJ特斯拉堆优化在线求调
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可爱萌新刚学OI,DJ特斯拉堆优化在线求调
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Fp0cY1tZ6Nn4Rd_楼主2024/7/17 08:40
#include<iostream>
#include<algorithm>
#include<cstring>
#include<vector>
#include<utility>
#include<queue>
using namespace std;
const int N=1e6+5,mod=1e5+3;
const long long INF=0x3F3F3F3F3F3F3F3F;
typedef struct Node{
	int idx;
	long long val;
	Node(){}
	Node(int _x,long long _y):idx(_x),val(_y){}
	friend bool operator>(Node x,Node y){ return x.val>y.val; }
} node;
int n,m,u,v;
long long dist[N],ans[N];
vector<int> G[N];
priority_queue<node,vector<node>,greater<node>> q;
bool vis[N];
void dijkstra(){
	q.push(node(1,0));
	dist[1]=0;
    ans[1]=1;
	while(!q.empty()){
		int now=q.top().idx;
		q.pop();
		if(vis[now]) continue;
		vis[now]=true;
		for(int i=0;i<G[now].size();i++){
			int next=G[now][i];
			if(dist[now]+1<dist[next]){
				dist[next]=dist[now]+1;
                ans[next]=ans[now];
				q.push(node(next,dist[next]));
			}else if(dist[now]+1==dist[next]){
                ans[next]+=ans[now];
                ans[next]%=mod;
            }
		}
	}
}
int main(){
	ios::sync_with_stdio(false);
	memset(dist,0x3F,sizeof(dist));
	cin>>n>>m;
	for(int i=1;i<=m;i++){
		cin>>u>>v;
		G[u].push_back(v);
	}
	dijkstra();
	for(int i=1;i<=n;i++)
		cout<<ans[i]<<endl;
	cout<<endl;
	return 0;
}
2024/7/17 08:40
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