Submission #947103

#	Time	Username	Problem	Language	Result	Execution time	Memory
947103		onepunchac168	Minerals (JOI19_minerals)	C++14	100 / 100	59 ms	4248 KiB

minerals

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

#define pb push_back

mt19937 mt(197797777);
int tmp=0;
bool query(int x)
{
    int rr=Query(x);
    bool ok;
    if (rr!=tmp)
    {
        ok=false;
    }
    else ok=true;
    tmp=rr;
    return ok;
}
void solve(vector <int> left,vector <int> right,bool check)
{
    if (left.empty())
    {
        return;
    }
    if (left.size()==1&&right.size()==1)
    {
        //cerr<<left[0]<<" "<<right[0]<<" ok"<<endl;
        Answer(left[0],right[0]);
        return;
    }
    int mid=int(left.size()*0.36)+1;
    //cerr<<left.size()<<" "<<right.size()<<endl;
    shuffle (left.begin(),left.end(),mt);
    shuffle (right.begin(),right.end(),mt);
    if (check==1)
    {
        mid=left.size()-mid;
        for (int i=mid;i<=left.size()-1;i++)
        {
            query(left[i]);
        }
    }
    else
    {
        for (int i=0;i<mid;i++)
        {
            query(left[i]);
        }
    }
    vector<int> lefta,leftb,righta,rightb;
    for (auto v:right)
    {
        if (righta.size()==mid)
        {
            rightb.pb(v);
        }
        else if (rightb.size()==right.size()-mid)
        {
            righta.pb(v);
        }
        else if (query(v)==true)
        {
            righta.pb(v);
        }
        else rightb.pb(v);
    }
    for (int i=0;i<mid;i++)
    {
        lefta.pb(left[i]);
    }
    for (int i=mid;i<left.size();i++)
    {
        leftb.pb(left[i]);
    }
    solve(lefta,righta,1);
    solve(leftb,rightb,0);
}
void Solve(int n)
{
    vector <int > opt;
    vector <int> left,right;
    for (int i=1;i<=2*n;i++)
    {
        if (query(i)==false)
        {
            left.pb(i);
        }
        else right.pb(i);
    }
    solve(left,right,1);
}

Compilation message (stderr)

minerals.cpp: In function 'void solve(std::vector<int>, std::vector<int>, bool)':
minerals.cpp:40:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |         for (int i=mid;i<=left.size()-1;i++)
      |                        ~^~~~~~~~~~~~~~~
minerals.cpp:55:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   55 |         if (righta.size()==mid)
      |             ~~~~~~~~~~~~~^~~~~
minerals.cpp:73:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for (int i=mid;i<left.size();i++)
      |                    ~^~~~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 30 / 30
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 10 / 10