Submission #569594

#	Time	Username	Problem	Language	Result	Execution time	Memory
569594		Aurora2005	Cave (IOI13_cave)	C++14	0 / 100	372 ms	412 KiB

cave

#include<bits/stdc++.h>
#include"cave.h"
using namespace std;

void exploreCave(int N){
  vector<pair<int,int>> ans(N);
  for(int i=0;i<N;i++) ans[i] = make_pair(-1,-1);
  for(int i=0;i<N;i++){
    int First[N];
    for(int j=0;j<N;j++){
      if(ans[j].first == -1) First[j] = 0;
      else First[j] = ans[j].second;
    }
    if(tryCombination(First) == i+1){
      int l = 0,r = N;
      while(r-l > 1){
        int m  = (l+r)/2;
        int S[N];
        for(int j=0;j<N;j++){
          if(ans[j].first == -1){
            if(j < m) S[j] = 0;
            else S[j] = 1;
          }
          else S[j] = ans[j].second;
        }
        if(tryCombination(S) == i+1) r = m;
        else l = m;
      }
      ans[l].first = i+1;
      ans[l].second = 1;
    }
    else{
      int l = 0,r = N;
      while(r-l > 1){
        int m  = (l+r)/2;
        int S[N];
        for(int j=0;j<N;j++){
          if(ans[j].first == -1){
            if(j < m) S[j] = 0;
            else S[j] = 1;
          }
          else S[j] = ans[j].second;
        }
        if(tryCombination(S) == i+1) l = m;
        else r = m;
      }
      ans[l].first = i+1;
      ans[l].second = 0;
    }
  }
  int ansS[N];
  int ansD[N];
  for(int i=0;i<N;i++){
    ansS[i] = ans[i].second;
    ansD[i] = ans[i].first;
  }
  answer(ansS,ansD);
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24