제출 #661052

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
661052		ono_de206	Burza (COCI16_burza)	C++14	0 / 160	1 ms	360 KiB

burza

#include<bits/stdc++.h>
using namespace std;
 
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define in insert
#define all(x) x.begin(),x.end()
#define pb push_back
#define eb emplace_back
#define ff first
#define ss second

typedef long long ll;
 
//#define int long long

template<typename T>
void mxx(T &a, T b){if(b>a) a=b;}
template<typename T>
void mnn(T &a, T b){if(b<a) a=b;}

const int mxn=410;
int dp[mxn];

vector<int> g[mxn];

void dfs(int to,int fr){
//	if(to==1) dp[to]=0;
//	else dp[to]=1;
	dp[to]=1;
	vector<int> lol;
	for(int x : g[to]){
		if(x==fr) continue;
		dfs(x,to);
		lol.pb(dp[x]);
	}
	sort(all(lol));
	if(lol.size()>1) dp[to]+=lol[lol.size()-2];
}

signed main(){
	fast;
	int n,k;
	cin>>n>>k;
	for(int i=0; i<n-1; i++){
		int a,b;
		cin>>a>>b;
		g[a].pb(b);
		g[b].pb(a);
	}
	dfs(1,0);
	if(dp[1]>k) cout<<"NE\n";
	else cout<<"DA\n";
	return 0;
}

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