제출 #1041326

#제출 시각아이디문제언어결과실행 시간메모리
1041326aymanrsIsland Hopping (JOI24_island)C++17
35 / 100
6 ms520 KiB
#include "island.h"
#include <vector>
using namespace std;

void solve(int N, int L) {
  vector<int> g[N+1];
  bool gg[N+1][N+1] = {{false}};
  for(int i = N;i>1;i--){
    int u = query(i, 1);
    if(gg[u][i]) continue;
    g[u].push_back(i);
    g[i].push_back(u);
    gg[u][i]=gg[i][u]=true;
  }
  bool load[N+1] = {false};
  int cnt[N+1];
  fill(cnt, cnt+N+1, 1);
  for(int i = 1;i < N;i++){
    load[i]=true;
    for(int j : g[i]) load[j] = true;
    for(int j : g[i]){
      if(j < i || cnt[j] == N-1) continue;
      int u = query(j, ++cnt[j]);
      if(load[u] || gg[u][j]) continue;
      load[u]=true;
      gg[u][j] = gg[j][u] = true;
      g[u].push_back(j);
      g[j].push_back(u);
    }
  }
  for(int i = 1;i <= N;i++){
    for(int j : g[i]) if(j > i) answer(i,j);
  }
}
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