oj.uz

답안 #1083804

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1083804 2024-09-04T07:41:36 Z mmdrzada Burza (COCI16_burza) C++17
0 / 160
 1 ms 472 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef long long ll;
 
#define sep ' '
#define F first
#define S second
#define fastIO 	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb push_back
#define kill(x) {cout << x << endl;return;}
const int N = 500;
const ll LLINF = 2e18;
int n, k;
int h[N];
int par[N];
int cnt[N];
vi adj[N];
// check MAXN
// diffrence between extract and erase in multi set
 
void set_io() {
	fastIO;
	// freopen("guard.in", "r", stdin);
	// freopen("guard.out", "w", stdout);
}

void dfs(int v = 0, int p = -1) {
	h[v] = (p == -1 ? 0 : h[p] + 1);
	par[v] = p;
	for(int neigh: adj[v]) {
		if (neigh == p) continue;
		dfs(neigh, v);
		cnt[v] += cnt[neigh];
	}
	cnt[v] += (h[v] == k);
}

void solve() {
	cin >> n >> k;
	for(int i = 0, a, b ; i < n-1 ; i ++)
		cin >> a >> b,
		adj[--a].pb(--b), adj[b].pb(a);
	
	dfs();
	
	set<pair<int, int>> p, q;
	q.insert({cnt[0], 0});
	int ans = 0;
	while(true) {
		p.clear();
		for(auto [x, u]: q) {
			if (h[u] == k) {
				cout << "NE" << endl;
				return;
			}
			for(int neigh: adj[u])
				if (neigh != par[u])
					p.insert({cnt[neigh], neigh});
		}
		if (p.size() == 0) break;
		p.erase(*p.rbegin());
		ans++;
		swap(p, q);
	}
	cout << (ans <= k ? "DA" : "NE") << endl;
}
 
int main() {
	set_io();
	solve();
	return 0;
}

Subtask #1
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 472 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #7
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 388 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Incorrect 1 ms 348 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #9
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #10
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -