Submission #319478

#	Time	Username	Problem	Language	Result	Execution time	Memory
319478		Vimmer	Fun Tour (APIO20_fun)	C++14	26 / 100	117 ms	17124 KiB

fun

#include <bits/stdc++.h>
#include "fun.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 N 100100
#define F first
#define S second
#define M ll(1e9 + 7)
#define endl '\n'
#define all(x) x.begin(), x.end()
#define PB push_back
#define sz(x) ll(x.size())
#define pw(x) (1ll << x)
#define pwr(x) ((1ll << x) - 1)
#define _ << " " <<
#define pri(s) cout << s << endl

using namespace std;
//using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef short int si;
typedef unsigned long long ull;

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

vector <int> g[N];

int mx, nm;

bool mk[N];

void dfs(int v, int p, int h)
{
    if (h > mx && !mk[v]) {mx = h; nm = v;}

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

        dfs(it, v, h + 1);
    }
}

vector<int> createFunTour(int n, int q)
{
    for (int i = 0; i < n; i++)
        for (int j = i + 1; j < n; j++)
          if (hoursRequired(i, j) == 1) {g[i].PB(j); g[j].PB(i);}

    dfs(0, -1, 1);

    int root = nm;

    mx = -1;

    dfs(root, -1, 1);

    root = nm;

    vector <int> vr; vr.clear();

    vr.PB(root);

    mk[root] = 1;

    while (sz(vr) < n)
    {
        mx = -1;

        dfs(root, -1, 1);

        root = nm;

        mk[root] = 1;

        vr.PB(root);
    }

    return vr;
}

//int main()
//{
//    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
//}

• Subtask 1: 10 / 10
• Subtask 2: 16 / 16
• Subtask 3: 0 / 21
• Subtask 4: 0 / 19
• Subtask 5: 0 / 34