Submission #1275040

#	Time	Username	Problem	Language	Result	Execution time	Memory
1275040		ghammazhassan	Island Hopping (JOI24_island)	C++20	28 / 100	4 ms	440 KiB

island

#include <bits/stdc++.h>

#include "island.h"

using namespace std;
void solve(int n,int l){
  int x,x1,x2;
  map<pair<int,int>,int>di;
  vector<int>d(n+1),cn(n+1),vi(n+1),a;
  d[1]=1;
  a.push_back(1);
  x=query(1,1);
  cn[1]++;
  d[x]=1;
  di[{1,x}]=1;
  di[{x,1}]=1;
  answer(1,x);
  a.push_back(x);
  x1=query(x,1);
  cn[x]++;
  if (x1!=1){
    a.push_back(x1);
    d[x1]=1;
    answer(x,x1);
    di[{x,x1}]=1;
    di[{x1,x}]=1;
  }
  else{
    x1=query(1,2);
    x2=query(x,2);
    if (x1!=x2){
      a.push_back(x1);
      d[x1]=1;
      answer(1,x1);
      di[{1,x1}]=1;
      di[{x1,1}]=1;
      a.push_back(x2);
      d[x2]=1;
      answer(x,x2);
      di[{x,x2}]=1;
      di[{x2,x}]=1;
    }
    else{
      int p;
      int i=1;
      while (((p=query(x1,i))!=1) and (p!=x)){
        i++;
      }
      a.push_back(x1);
      d[x1]=1;
      answer(p,x1);
      cn[p]++;
      di[{p,x1}]=1;
      di[{x1,p}]=1;
    }
  }
  int c=a.size();
  while (c<n){
    int h=a.back();
    x=query(h,cn[h]+1);
    cn[h]++;
    if (di[{x,h}])continue;
    if (d[x]){
      a.pop_back();
      continue;
    }
    a.push_back(x);
    d[x]=1;
    answer(h,x);
    di[{h,x}]=1;
    di[{x,h}]=1;
    c++;
  }
  return;
}

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 0 / 7
• Subtask 4: 9 / 9
• Subtask 5: 13 / 13
• Subtask 6: 0 / 15
• Subtask 7: 0 / 22
• Subtask 8: 0 / 28