This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#include "fun.h"
#define fi first
#define se second
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
using namespace std;
const int N = 1e5 + 10;
// int ind[N];
// int ds[N];
// int pw[2 * N];
// pii mn[2 * N][20];
// vector<pii> tr;
// vector<int> gr[N];
// void dfs (int city, int pr) {
// ind[city] = tr.size();
// tr.push_back({ds[city], city});
// for (int i : gr[city]) {
// if (i == pr)
// continue;
// ds[i] = ds[city] + 1;
// dfs(i, city);
// tr.push_back({ds[city], city});
// }
// }
// void build_sparce () {
// for (int i = 2; i <= tr.size(); ++i)
// pw[i] = pw[i >> 1] + 1;
// for (int i = 0; i < tr.size(); ++i)
// mn[i][0] = tr[i];
// for (int i = 1; i < 20; ++i)
// for (int j = 0; j <= (int)tr.size() - (1 << i); ++j)
// mn[j][i] = min(mn[j][i - 1], mn[j + (1 << (i - 1))][i - 1]);
// }
// int get_lca (int u, int v) {
// u = ind[u];
// v = ind[v];
// if (u > v)
// swap(u, v);
// int x = pw[v - u + 1];
// return min(mn[u][x], mn[v - (1 << x) + 1][x]).se;
// }
// int get_dist (int u, int v) {
// int lc = get_lca(u, v);
// return dist[u] + dist[v] - dist[lc] * 2;
// }
// int hoursRequired (int u, int v) {
// cout << "? " << u << ' ' << v << '\n';
// int x = get_dist(u, v);
// return x;
// }
// int attractionsBehind () {
// }
vector<int> createFunTour (int n, int q) {
vector<int> res;
if (n <= 500) {
int dist[n][n];
int mx = 0;
pii fr;
for (int i = 0; i < n; ++i) {
dist[i][i] = 0;
for (int j = i + 1; j < n; ++j) {
if (i != j) {
int w = hoursRequired(i, j);
dist[i][j] = w;
dist[j][i] = w;
}
mx = max(mx, dist[i][j]);
if (mx == dist[i][j])
fr = {i, j};
}
}
bool us[n] = {};
us[fr.fi] = 1;
res.push_back(fr.fi);
us[fr.se] = 1;
res.push_back(fr.se);
int city = fr.se;
for (int i = 3; i <= n; ++i) {
int loc_mx = 0;
int who = -1;
for (int j = 0; j < n; ++j) {
if (us[j])
continue;
loc_mx = max(loc_mx, dist[city][j]);
if (loc_mx == dist[city][j])
who = j;
}
us[who] = 1;
res.push_back(who);
city = who;
}
}
return res;
}
// signed main () {
// int n, q;
// cin >> n >> q;
// for (int i = 1; i < n; ++i) {
// int u, v;
// cin >> u >> v;
// gr[u].push_back(v);
// gr[v].push_back(u);
// }
// dfs(0, -1);
// build_sparce();
// vector<int> ans = createFunTour(n, q);
// for (int i : ans)
// cout << i << ' ';
// cout << '\n';
// return 0;
// }
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |