이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include "fun.h"
using namespace __gnu_pbds;
using namespace std;
template <typename T>
using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;
mt19937 gen(std :: chrono :: system_clock :: now().time_since_epoch().count());
const int _N = 500;
int d[_N][_N];
int vis[_N];
//
//static void wrongAnswer(std::string message) {
// printf("WA: %s\n", message.c_str());
// exit(0);
//}
//
//namespace tree_helper {
//
//static int N;
//static int logN;
//static std::vector<std::vector<int>> parent;
//static std::vector<int> depth;
//static std::vector<int> subtree_size;
//
//static void dfs(
// const std::vector<std::vector<int>>& adj_list,
// int current_node, int parent_node) {
// parent[0][current_node] = parent_node;
// subtree_size[current_node] = 1;
// for (int i = 0; i < static_cast<int>(adj_list[current_node].size()); ++i) {
// const int next_node = adj_list[current_node][i];
// if (next_node != parent_node) {
// depth[next_node] = depth[current_node] + 1;
// dfs(adj_list, next_node, current_node);
// subtree_size[current_node] += subtree_size[next_node];
// }
// }
//}
//
//static void initializeTree(const std::vector<std::vector<int>>& adj_list) {
// N = static_cast<int>(adj_list.size());
//
// depth = std::vector<int>(N, 0);
// subtree_size = std::vector<int>(N, 0);
// for (logN = 0; (1 << logN) < N; ++logN) {}
// parent = std::vector<std::vector<int>>(logN, std::vector<int>(N, 0));
//
// dfs(adj_list, 0, 0);
// for (int i = 1; i < logN; ++i) {
// for (int j = 0; j < N; ++j) {
// parent[i][j] = parent[i - 1][parent[i - 1][j]];
// }
// }
//}
//
//static int getLowestCommonAncestor(int X, int Y) {
// if (depth[X] < depth[Y]) {
// std::swap(X, Y);
// }
// for (int i = logN - 1; i >= 0; --i) {
// if (depth[parent[i][X]] >= depth[Y]) {
// X = parent[i][X];
// }
// }
// if (X == Y) {
// return X;
// }
// for (int i = logN - 1; i >= 0; --i) {
// if (parent[i][X] != parent[i][Y]) {
// X = parent[i][X];
// Y = parent[i][Y];
// }
// }
// return parent[0][X];
//}
//
//static int getDistance(int X, int Y) {
// return depth[X] + depth[Y] - 2 * depth[getLowestCommonAncestor(X, Y)];
//}
//
//static int attractionsBehind(int X, int Y) {
// if (X == Y) {
// return N;
// }
// for (int i = logN - 1; i >= 0; --i) {
// if (depth[parent[i][X]] > depth[Y]) {
// X = parent[i][X];
// }
// }
// if (Y == parent[0][X]) {
// return N - subtree_size[X];
// }
// return subtree_size[Y];
//}
//
//static void checkFunTour(const std::vector<int>& fun_tour) {
// if (static_cast<int>(fun_tour.size()) != N) {
// wrongAnswer("Invalid size");
// }
//
// std::vector<bool> visited_attractions(N, false);
// for (int i = 0; i < N; ++i) {
// if (fun_tour[i] < 0 || fun_tour[i] >= N) {
// wrongAnswer("Invalid index");
// }
// if (visited_attractions[fun_tour[i]]) {
// wrongAnswer("Repeated index");
// }
// visited_attractions[fun_tour[i]] = true;
// }
//
// int last_travel_time = getDistance(fun_tour[0], fun_tour[1]);
// for (int i = 2; i < N; ++i) {
// int travel_time = getDistance(fun_tour[i - 1], fun_tour[i]);
// if (travel_time > last_travel_time) {
// wrongAnswer("Tour is not fun");
// }
// last_travel_time = travel_time;
// }
//}
//
//} // namespace tree_helper
//
//static int N, Q;
//
//int hoursRequired(int X, int Y) {
// if (--Q < 0) {
// wrongAnswer("Too many queries");
// }
// if (X < 0 || X >= N || Y < 0 || Y >= N) {
// wrongAnswer("Invalid index");
// }
// return tree_helper::getDistance(X, Y);
//}
//
//int attractionsBehind(int X, int Y) {
// if (--Q < 0) {
// wrongAnswer("Too many queries");
// }
// if (X < 0 || X >= N || Y < 0 || Y >= N) {
// wrongAnswer("Invalid index");
// }
// return tree_helper::attractionsBehind(X, Y);
//}
vector <int> createFunTour(int N, int Q) {
for (int i = 0; i < N; ++i)
for (int j = 0; j < N; ++j)
d[i][j] = hoursRequired(i, j);
int S = 0;
// for (int i = 0; i < N; ++i)
// if (d[0][i] > d[0][S]) S = i;
// int T = 0;
// for (int i = 0; i < N; ++i)
// if (d[S][i] > d[S][T]) T = i;
vector <int> ans;
// ans.push_back(S);
vis[S] = 1;
int T = 0;
int last = 1e9;
for (int i = 1; i < N; ++i) {
for (int i = 0; i < N; ++i)
if (!vis[i] && d[S][i] > d[S][T] && d[S][i] <= last) T = i;
vis[T] = 1;
last = d[S][T];
ans.push_back(S);
S = T;
}
ans.push_back(T);
return ans;
}
//
//int main() {
// assert(2 == scanf("%d %d", &N, &Q));
//
// std::vector<std::vector<int>> adj_list(N);
// for (int i = 0; i < N - 1; ++i) {
// int A, B;
// assert(2 == scanf("%d %d", &A, &B));
// adj_list[A].push_back(B);
// adj_list[B].push_back(A);
// }
// tree_helper::initializeTree(adj_list);
//
// std::vector<int> fun_tour = createFunTour(N, Q);
// tree_helper::checkFunTour(fun_tour);
//
// for (int i = 0; i < N; ++i) {
// printf("%d%c", fun_tour[i], " \n"[i == N - 1]);
// }
// return 0;
//}
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