제출 #1265018

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1265018		porquenomedejainiciarsesion	World Map (IOI25_worldmap)	C++20	0 / 100	2 ms	3140 KiB

worldmap

#include "worldmap.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
vector<int> res;
vector<vector<int>> adj;
unordered_map<int,unordered_map<int,bool>> V;
void dfs(int cur, int parent = -1) {
    res.push_back(cur);    
    for (auto x : adj[cur]) {
        if (!V[x][cur]) {
            V[x][cur]=1;
            dfs(x, cur);    
            res.push_back(cur);
        }
    }
}
std::vector<std::vector<int>> create_map(int N, int M, std::vector<int> A, std::vector<int> B) {
  adj.resize(N);
  std::vector<std::vector<int>> ans;
  for(int i=0;i<M;i++){
    adj[A[i]-1].push_back(B[i]-1);
    adj[B[i]-1].push_back(A[i]-1);
  }
  dfs(0);
  for(int i=0;i<res.size();i++){
    ans.push_back(res);
  }

  return ans;
}

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