Submission #240038

#	Time	Username	Problem	Language	Result	Execution time	Memory
240038		ctziapo	Cave (IOI13_cave)	C++14	100 / 100	909 ms	632 KiB

cave

#include "cave.h"
using namespace std;

void exploreCave(int N) {
    int n=N;
    int p[n]={};
    int a[n]={};
    int f[n];
    for(int i=0;i<n;i++){
        f[i]=-1;
    }
    int c=0;
    int cou=0;
    int t[n];
    while(c<n-1){


    for(int i=0;i<n;i++){
        if(f[i]!=-1){
            t[i]=f[i];
        }
        else
            t[i]=0;
    }
      int t2=tryCombination(t);
      //cout<<endl;
      //cout<<"tosa me 0 : "<<t2<<" to c einai "<<c<<endl;

      int one=0;
      if(t2<=c && t2!=-1)
          one=1;

      //cout<<"einai  "<<one<<endl;

      int l=0,r=n-1;

      while(l<=r){

        int mid=(l+r)/2;
        for(int i=0;i<n;i++){
        if(f[i]!=-1){
            t[i]=f[i];
        }
        else{
            if(i<=mid)
                t[i]=one;
            else
                t[i]=(one+1)%2;
        }
    }
        int t3=tryCombination(t);
        //cout<<"dokimi me t3 : "<<t3<<"   mid "<<mid<<endl;
        for(int i=0;i<n;i++){
            //cout<<t[i]<<" ";
        }
        //cout<<endl;


        if(t3>c || t3==-1){
            r=mid-1;
        }
        else
            l=mid+1;
      }
      //cout<<"thesi old "<<l<<endl;
      //cout<<"dokimi me final : "<<tryCombination(t)<<endl;
        for(int i=0;i<n;i++){
            //cout<<t[i]<<" ";
        }
        //cout<<endl;


      //cout<<"thesi "<<l<<endl;
      f[l]=one;
      a[l]=cou;
      //cout<<"cou "<<cou<<endl;
      cou++;
      c++;
    }
    int pos=0;
  for(int i=0;i<n;i++){
        if(f[i]!=-1){
            t[i]=f[i];
        }
        else
            pos=i;
  }
  //cout<<"position "<<pos<<" "<<t[pos]<<tryCombination(t);
if(tryCombination(t)!=-1){
    t[pos]=(t[pos]+1)%2;
}
    a[pos]=n-1;
    answer(t,a);
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:6:9: warning: unused variable 'p' [-Wunused-variable]
     int p[n]={};
         ^

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