제출 #1252843

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1252843		madamadam3	세계 지도 (IOI25_worldmap)	C++20	0 / 100	1 ms	580 KiB

worldmap

#include "worldmap.h"
#include <bits/stdc++.h>

using namespace std;

using vi = vector<int>;
using vvi = vector<vi>;

void dfs(int u, vector<bool> &vis, vvi &adj, vi &tour) {
  vis[u] = true;
  tour.push_back(u);
  
  for (int v : adj[u]) {
    if (vis[v]) continue;
    dfs(v, vis, adj, tour);
    tour.push_back(u);
  }
}

vvi create_map(int n, int m, vi a, vi b) {
  vvi adj(n+1, vi()); for (int i = 0; i < m; i++) adj[a[i]].push_back(b[i]), adj[b[i]].push_back(a[i]);
  
  vector<bool> vis(n+1, false); vi tour; set<int> seen;
  dfs(1, vis, adj,tour);

  vvi ans(1); vector<int> ridx(n);
  for (int i = 0; i < tour.size(); i++) {
    if (!seen.count(tour[i])) {
      ans[0].push_back(tour[i]); 
      ridx[tour[i]] = ans[0].size();
      ans[0].push_back(tour[i]);
    }
    ans[0].push_back(tour[i]);
    seen.insert(tour[i]);
  }

  int K = ans[0].size();
  for (int i = 1; i < K; i++) {
    ans.push_back(vi(K));
    for (int j = 0; j < K; j++) {
      ans[i][j] = ans[i-1][j];
    }
  }

  for (int i = 0; i < n; i++) {
    int r = ridx[i];
    int cc = 0;
    for (auto &el : adj[i]) {
      ans[cc][r] = el;
      cc += 2;
    }
  }
  return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 7
• Subtask 4: 0 / 8
• Subtask 5: 0 / 14
• Subtask 6: 0 / 56