| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1346725 | I_FloPPed21 | Burza (COCI16_burza) | C++20 | 0 ms | 344 KiB |
#include <bits/stdc++.h>
using namespace std;
const int N=401;
int dp[N];
vector<int>adj[N];
void dfs(int nod,int p)
{
for(auto u:adj[nod])
{
if(u!=p)
dfs(u,nod);
}
int mx1=-1,mx2=-1;
for(auto u:adj[nod])
{
if(u!=p)
{
if(mx1<dp[u])
{
mx2=mx1;
mx1=dp[u];
}
else
if(mx2<dp[u])
mx2=dp[u];
}
}
dp[nod]=mx2+1;
}
int main()
{
int n,k;
cin>>n>>k;
for(int i=1;i<n;i++)
{
int a,b;
cin>>a>>b;
adj[a].push_back(b);
adj[b].push_back(a);
}
dfs(1,0);
if(dp[1]>=k)
{
cout<<"NE"<<'\n';
}
else
cout<<"DA"<<'\n';
return 0;
}
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