Submission #338905

#	Time	Username	Problem	Language	Result	Execution time	Memory
338905		NicolaAbusaad2014	Cave (IOI13_cave)	C++14	0 / 100	2087 ms	1012 KiB

cave

/**
 * Prof.Nicola
**/
#include "cave.h"
#include <bits/stdc++.h>

using namespace std;
template<class T>void re(T&x){cin>>x;}
template<class T1,class T2> void re(pair<T1,T2>&x){re(x.first);re(x.second);}
template<class T>void re(vector<T>&x){for(long i=0;i<x.size();i++){re(x[i]);}}
template<class T>void re(deque<T>&x){for(long i=0;i<x.size();i++){re(x[i]);}}
template<class T1,class T2> pair<T1,T2> mp(T1&x,T2&z){return make_pair(x,z);}
long long n,turn[5001]={};
vector<long>arr;
set<long>s;
set<long>::iterator t;
/*long tryCombination(int arr[])
{

    for(long i=0;i<n;i++){
        cout<<arr[i]<<" ";
    }
    cout<<endl;
    long x;
    cin>>x;
    return x;
}
*/void con(long l,long r)
{
    t=s.begin();
    for(long i=0;i<s.size();i++){
        arr[*t]=turn[*t];
        t++;
    }
    for(long i=0;i<n&&r>=0;i++){
        if(!s.count(i)){
            if(l){
                l--;
                r--;
                continue;
            }
            arr[i]=(arr[i]^1);
            r--;
        }
    }
}
long long ret(long x)
{
    for(long i=0;i<n;i++){
        if(!s.count(i)){
            if(x){
                x--;
                continue;
            }
            return i;
        }
    }
}
long long bin(long long l,long long r,long long x)
{
    long long mid,z;
    int a[n];
    while(l<r){
        mid=(l+r)/2;
        con(l,mid);
        for(long i=0;i<n;i++){
            a[i]=arr[i];
        }
        z=tryCombination(a);
        if(z==x){
            l=mid+1;
        }
        else{
            con(l,mid);
            r=mid;
        }
    }
    return ret(l);
}
/*answer(int a[],int b[])
{
    for(long i=0;i<n;i++){
        cout<<a[i]<<" ";
    }
    cout<<endl;
    for(long i=0;i<n;i++){
        cout<<b[i]<<" ";
    }
    cout<<endl;
}
*/void exploreCave(int N) {
    n=N;
    arr.resize(n);
    int sw[n]={},ans[n]={},a[n];
    long x;
    for(long i=0;i<N;i++){
        con(0,-1);
        for(long i=0;i<n;i++){
            a[i]=arr[i];
        }
        if(tryCombination(a)!=i){
            con(0,N-1-i);
        }
        x=bin(0,N-i-1,i);
        cout<<x<<endl;
        ans[x]=i;
        sw[x]=(arr[x]^1);
        turn[x]=sw[x];
        s.insert(x);
    }
    answer(sw,ans);
    return;
}

Compilation message (stderr)

cave.cpp: In function 'void con(long int, long int)':
cave.cpp:31:19: warning: comparison of integer expressions of different signedness: 'long int' and 'std::set<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(long i=0;i<s.size();i++){
      |                  ~^~~~~~~~~
cave.cpp: In function 'long long int ret(long int)':
cave.cpp:58:1: warning: control reaches end of non-void function [-Wreturn-type]
   58 | }
      | ^

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