oj.uz

답안 #242767

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
242767 2020-06-29T09:32:36 Z Vimmer Burza (COCI16_burza) C++14
64 / 160
 105 ms 50696 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 100001
#define M ll(1e9 + 7)
#define inf 1e9 + 1e9

using namespace std;
//using namespace __gnu_pbds;

typedef long double ld;
typedef long long ll;
typedef short int si;
typedef array <int, 2> a2;

//typedef tree <int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;


vector <int> g[401], vr;

int h[401], n, k, mxh[401], in[401], out[401];

bool f[401][(1 << 19)];

void rec(int v, int p)
{
    if (p != -1) h[v] = h[p] + 1;

    mxh[v] = h[v];

    if (h[v] == k) return;

    for (auto it : g[v])
    {
        if (it == p) continue;

        rec(it, v);

        mxh[v] = max(mxh[v], mxh[it]);
    }
}

void dfs(int v, int p)
{
    in[v] = sz(vr);

    vr.pb(v);

    for (auto it : g[v])
    {
        if (it == p || mxh[it] != k) continue;

        dfs(it, v);
    }
    out[v] = sz(vr);
}

int main()
{
    //freopen("input.txt", "r", stdin); //freopen("output4.txt", "w", stdout);

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> n >> k;

    if (k >= 20) {cout << "DA" << endl; exit(0);}

    for (int i = 1; i < n; i++)
    {
        int x, y;

        cin >> x >> y;

        g[x].pb(y);

        g[y].pb(x);
    }

    rec(1, -1);

    dfs(1, -1);

    for (int i = 0; i < (1 << 19); i++) f[sz(vr)][i] = 1;

    for (int i = sz(vr) - 1; i >= 0; i--)
      for (int msk = 0; msk < (1 << k); msk++)
      {
          int v = vr[i];

          if (h[v] < k)
          {
              f[i][msk] = f[i + 1][msk];

              if (f[i][msk]) continue;
          }

          if ((1 << h[v]) & msk) continue;

          f[i][msk] = f[out[v]][msk | (1 << h[v])];
      }

    if (!f[1][0]) cout << "NE" << endl;
      else cout << "DA" << endl;
}

Subtask #1
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 7040 KB Output is correct
2 Correct 100 ms 50424 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 6 ms 2688 KB Output is correct
6 Incorrect 5 ms 1152 KB Output isn't correct

Subtask #2
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 92 ms 48248 KB Output is correct
2 Correct 101 ms 48248 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 96 ms 48504 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 94 ms 48504 KB Output is correct
2 Correct 93 ms 48380 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 6 ms 2304 KB Output is correct
6 Correct 5 ms 1280 KB Output is correct

Subtask #4
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 13824 KB Output is correct
2 Correct 100 ms 50696 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 8 ms 2048 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 90 ms 46328 KB Output is correct
2 Correct 95 ms 48120 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 6 ms 2688 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 96 ms 48760 KB Output is correct
2 Correct 95 ms 47480 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 6 ms 2560 KB Output is correct
6 Correct 6 ms 1920 KB Output is correct

Subtask #7
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 100 ms 49272 KB Output is correct
2 Correct 97 ms 47864 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 91 ms 47736 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #8
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 12288 KB Output is correct
2 Correct 97 ms 49724 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 1920 KB Output is correct
6 Correct 6 ms 2688 KB Output is correct

Subtask #9
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 6272 KB Output is correct
2 Correct 105 ms 49656 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 6 ms 1920 KB Output is correct
6 Correct 7 ms 2560 KB Output is correct

Subtask #10
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 22008 KB Output is correct
2 Correct 95 ms 49912 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 45 ms 22272 KB Output isn't correct
6 Halted 0 ms 0 KB -