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样例没过求调
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Alvin0228楼主2024/10/8 22:53
#include<bits/stdc++.h>
using namespace std;
int head[4000005],num_edge;
struct Edge
{
	int nxt,to;
}edge[4000005];
void add_edge (int from,int to)
{
	edge[++num_edge].nxt=head[from];
	edge[num_edge].to=to;
	head[from]=num_edge;
}
typedef pair<int,int> pii;
int vis[4000005], d[4000005],ans[4000005];
void dijkstra(int s) 
{
	ans[s]=1;
	priority_queue<pii, vector<pii>, greater<pii> > Q;
	memset(vis, false, sizeof(vis));
	Q.push(make_pair(d[s], s));
	while(!Q.empty()) 
	{
		pii tmp = Q.top();
		Q.pop();
		int x = tmp.second;
		if(vis[x]) continue;
		vis[x] = true;
		for(int i = head[x]; i>0; i = edge[i].nxt) 
		{
			int j=edge[i].to;
			if(d[j]==d[x]+1)
			{
				ans[j]+=ans[x];
				ans[j]%=100003;
			}
			if(d[j]>d[x]+1) 
			{
				ans[j]=ans[x];
				d[j]=d[x]+1;
				Q.push(make_pair(d[edge[i].to], edge[i].to));
			}
		}
	}
}
int main ()
{
//	freopen(".in","r",stdin);
//	freopen(".out","w",stdout);
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n,m;
	cin>>n>>m;
	for(int i=1; i<=n; i++) 
	{
		d[i]=0x3f3f3f3f;
	}
	for (int i=1;i<=m;i++)
	{
		int u,v;
		cin>>u>>v;
		add_edge(u,v);
		add_edge(v,u);
	}
	dijkstra(1);
	for (int i=1;i<=n;i++)
	{
		cout<<ans[i]<<endl;
	}
	return 0;
}

2024/10/8 22:53
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