bGary @ 2017-09-28 21:39:04
dfs
#include <iostream>
#include <cstring>
using namespace std;
bool vis[101010],flag;
long long a[101010],ans[101010],map[10101][10101],u,v,n,m;
void dfs(long long s,long long e,long long t)
{
if(flag) return;
if(vis[s]) return;//cout<<st<<" "<<t<<endl;
vis[s]=1;
if(s==e)//if(a[ed]==t) ans[ed]++;
flag=1;
if(a[s]==t) ans[s]++;
for(long long i=1;i<=n;i++)
if(map[s][i] && !vis[i])
dfs(i,e,t+1);
}
int main()
{
cin>>n>>m;
for(long long i=1;i<n;i++)
{
cin>>u>>v;
map[u][v]=1;
map[v][u]=1;
}
for(long long i=1;i<=n;i++)
cin>>a[i];
for(long long i=1;i<=m;i++)
{
memset(vis,0,sizeof(vis));
flag=0;long long s,e;
cin>>s>>e;
dfs(s,e,0);
}
for(long long i=1;i<=n;i++) cout<<ans[i]<<" ";
return 0;
}
/* 6 3 2 3 1 2 1 4 4 5 4 6 0 2 5 1 2 3
1 5 1 3 2 6 */ /* 5 3 1 2 2 3 2 4 1 5 0 1 0 3 0
3 1 1 4 5 5 */
by Victorique @ 2017-09-28 21:54:51
大佬太强辣%%%%%%%%%
by yybyyb @ 2017-09-28 21:58:28
您空间炸了。
by __世界第一弱__ @ 2017-09-28 21:59:18
by λᴉʍ @ 2017-09-28 22:11:00
8B*10101*10101=816241608B=778.42MB = =不应该MLE吗
by I_AM_HelloWord @ 2017-09-29 20:40:28
MAP数组很爆炸呵
by Humor丶捷 @ 2017-10-25 18:04:42