Submission #242766

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
242766	2020-06-29T09:30:15 Z	Vimmer	Burza (COCI16_burza)	C++14	160 / 160	144 ms	87072 KB

burza

#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[405], vr;

int h[405], n, k, mxh[405], in[405], out[405];

bool f[405][(1 << 20)];

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 << 20); i++) f[sz(vr)][i] = 1;

    for (int i = sz(vr) - 1; i >= 0; i--)
      for (int msk = 0; msk < (1 << (k + 1)); 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
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	18 ms	10880 KB	Output is correct
2	Correct	144 ms	87072 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	7 ms	3584 KB	Output is correct
6	Correct	5 ms	1664 KB	Output is correct

Subtask #2
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	137 ms	84216 KB	Output is correct
2	Correct	133 ms	84856 KB	Output is correct
3	Correct	4 ms	404 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	127 ms	85112 KB	Output is correct
6	Correct	6 ms	3584 KB	Output is correct

Subtask #3
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	130 ms	84900 KB	Output is correct
2	Correct	129 ms	84668 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	7 ms	3072 KB	Output is correct
6	Correct	6 ms	1792 KB	Output is correct

Subtask #4
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	21756 KB	Output is correct
2	Correct	133 ms	87032 KB	Output is correct
3	Correct	6 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	6 ms	2816 KB	Output is correct
6	Correct	5 ms	1664 KB	Output is correct

Subtask #5
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	129 ms	82296 KB	Output is correct
2	Correct	137 ms	84728 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	3584 KB	Output is correct
6	Correct	6 ms	2944 KB	Output is correct

Subtask #6
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	128 ms	84856 KB	Output is correct
2	Correct	133 ms	83576 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	7 ms	3456 KB	Output is correct
6	Correct	6 ms	2688 KB	Output is correct

Subtask #7
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	134 ms	86264 KB	Output is correct
2	Correct	130 ms	84088 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	138 ms	84448 KB	Output is correct
6	Correct	6 ms	3200 KB	Output is correct

Subtask #8
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	20096 KB	Output is correct
2	Correct	132 ms	86264 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	2688 KB	Output is correct
6	Correct	7 ms	3584 KB	Output is correct

Subtask #9
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	9856 KB	Output is correct
2	Correct	129 ms	86136 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	4 ms	384 KB	Output is correct
5	Correct	6 ms	2688 KB	Output is correct
6	Correct	7 ms	3456 KB	Output is correct

Subtask #10
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	59 ms	38392 KB	Output is correct
2	Correct	138 ms	86264 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	60 ms	38776 KB	Output is correct
6	Correct	6 ms	2304 KB	Output is correct

Submission #242766

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