oj.uz

답안 #653522

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
653522 2022-10-27T07:14:36 Z darshitjn Burza (COCI16_burza) C++14
0 / 160
 1 ms 464 KB 
#include <bits/stdc++.h>
using namespace std;
#define gc getchar_unlocked
#define fo(i,n) for(ll i=0;i<n;i++)
#define Fo(i,k,n) for(ll i=k;i<n;i++)
#define ll long long
#define si(x)	scanf("%d",&x)
#define sl(x)	scanf("%I64d",&x)
#define ss(s)	scanf("%s",s)
#define pb push_back
#define F first
#define S second
#define clr(x) memset(x, 0, sizeof(x))
#define tr(it, a) for(auto it = a.begin(); it != a.end(); it++)
#define all(x) x.begin(), x.end()
#define PI 3.1415926535897932384626
#define deb(x) cout << #x << " " << x << "\n";
#define INP(v) for(auto &x:v){cin >> x;}
#define OUT(v) for(auto &x:v){cout << x << " ";}
typedef pair<int, int>	pii;
typedef pair<ll, ll>	pll;
typedef vector<int>		vi;
typedef vector<ll>		vl;
typedef vector<pii>		vpii;
typedef vector<pll>		vpll;
typedef vector<vi>		vvi;
typedef vector<vl>		vvl;
const ll mod = 1000000007;
const ll N = 2e5;
const ll Fact_Length = 5e5 + 100;

void solve(){
    ll n,k; cin >> n >> k;
    vvl adj(n);
    ll a,b;
    fo(i,n-1){
        cin >> a >> b;
        adj[--a].pb(--b);
        adj[b].pb(a);
    }

    function <ll(ll,ll)> dfs = [&](ll i,ll prev){
         vl moves;
         for(auto x:adj[i]){
            if(x==prev)
               continue;
            moves.pb(dfs(x,i)+1);
         }
         if(moves.size()<=1){return 1ll;}
         sort(all(moves),greater<ll>());
         return moves[1];  
    };

    if(dfs(0,-1)<=k){cout << "DA\n";}
    else{cout << "NE\n";}
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    
    ll darshit = 1;
    
    for(ll i=1;i<=darshit;i++)
    {
    solve();
    }
	return 0;
}

Subtask #1
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 464 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -