oj.uz

답안 #436600

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
436600 2021-06-24T16:43:26 Z VinnieThePooh32 Burza (COCI16_burza) C++14
0 / 160
 2 ms 352 KB 
#include <iostream>
#include <vector>
using namespace std;
const int N = 405;

int n, k;
int target = 2;
bool rFull = false;
vector<int> h, depths;
vector<bool> rootChildren;
vector<vector<int>> tmpadj, adj;

bool dfs(int node, int parent, int depth, int orgNode) {
    depth++;
    depths[node] = depth;
    if (h[node] == k) {
        rootChildren[orgNode] = true;
        return true;
    }
    bool res = false;
    for (int v : tmpadj[node]) if (v != parent) {
        if (node == 1) {
            orgNode = v;
        }
        h[v] = h[node] + 1;
        int nxt = dfs(v, node, depth, orgNode);
        res |= nxt;
        if (nxt) adj[node].push_back(v);
    }
    return res;
}

void dfs2(int node, int parent) {
    if (depths[node] == target) {
        target++;
        return;
    }
    if (depths[node] == k + 1 && target == k + 2) {
        cout << "NE";
        rFull = true;
        return;
    }
    for (int v : adj[node]) {
        if (node == 1 && !rootChildren[v]) {
            continue;
        }
        dfs2(v, node);
        if (rFull) {
            return;
        }

    }
    return;
}

int main()
{
    cin >> n >> k;
    if (k > 20) {
        cout << "DA";
    }
    h.resize(n + 1);
    adj.resize(n + 1);
    tmpadj.resize(n + 1);
    depths.resize(n + 1, 0);
    rootChildren.resize(n + 1);
    for (int i = 1; i < n; i++) {
        int u, v; cin >> u >> v;
        tmpadj[u].push_back(v);
        tmpadj[v].push_back(u);
    }

    if (!dfs(1, -1, 0, 0)) {
        cout << "DA";
    }
    dfs2(1, -1);
    if (!rFull) {
        cout << "DA";
    }
    
}

Subtask #1
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 352 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 288 KB Output is correct
2 Correct 2 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #9
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #10
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Halted 0 ms 0 KB -