제출 #1294661

#제출 시각아이디문제언어결과실행 시간메모리
1294661theiulius세계 지도 (IOI25_worldmap)C++17
0 / 100
3 ms2108 KiB
#include "worldmap.h"
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
vector<int> v[102];
int j = 0;
vector<std::vector<int>> ans(50, vector<int> (50, 1));

void dfs(int x, int last){
  ans[0][j] = x;

  for (auto h : v[x]){
    if (last != h){
      j++;
      dfs(h, x);
    }
  }

  ans[0][j] = x;
  j++;
}

std::vector<std::vector<int>> create_map(int N, int M, std::vector<int> a, std::vector<int> b) {
  for (int k = 0; k < M; k++){
    v[a[k]].pb(b[k]);
    v[b[k]].pb(a[k]);
  }

  dfs(1, 0);

  for (int k = 1; k < 50; k++){
    for (int j = 0; j < 50; j++){
      ans[k][j] = ans[0][j];
    }
  }

  return ans;
}
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