Submission #772002

#	Time	Username	Problem	Language	Result	Execution time	Memory
772002		Valters07	Minerals (JOI19_minerals)	C++14	80 / 100	46 ms	2748 KiB

minerals

#include <bits/stdc++.h>
#include "minerals.h"
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
#define fio ios_base::sync_with_stdio(0);cin.tie(0);
#define ll long long
#define en cin.close();return 0;
#define pb push_back
#define fi first//printf("%lli\n",cur);
#define se second//scanf("%lli",&n);
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n1, cur;
int q(int x)
{
    return cur=Query(x);
}
void go(vector<int> &a, vector<int> &b, bool isa, bool isb)
{
    random_shuffle(a.begin(),a.end());
    random_shuffle(b.begin(),b.end());
    assert(a.size()==b.size());
    int n = a.size(), mid = min(n - 1, (int)ceil(0.5*n));
    if(n==1)
        Answer(a[0],b[0]);
    else if(isb)
    {
        vector<int> la, ra, lb, rb;
        for(int i = 0;i<n;i++)
        {
            if(i<mid)
            {
                if(!isa)
                    q(a[i]);
                la.pb(a[i]);
            }
            else
            {
                if(isa)
                    q(a[i]);
                ra.pb(a[i]);
            }
        }
        for(int i = 0, lst=cur;i<n;i++)
        {
            int t = q(b[i]);
            if(t==lst)
                lb.pb(b[i]);
            else
                rb.pb(b[i]);
            lst=t;
        }
        go(la,lb,1,0);
        go(ra,rb,0,0);
    }
    else
    {
        vector<int> la, ra, lb, rb;
        for(int i = 0;i<n;i++)
        {
            if(i<mid)
            {
                if(!isa)
                    q(a[i]);
                la.pb(a[i]);
            }
            else
            {
                if(isa)
                    q(a[i]);
                ra.pb(a[i]);
            }
        }
        for(int i = 0, lst=cur;i<n;i++)
        {
            int t = q(b[i]);
            if(t==lst)
                lb.pb(b[i]);
            else
                rb.pb(b[i]);
            lst=t;
        }
        go(la,lb,1,1);
        go(ra,rb,0,1);
    }
}
void Solve(int n)
{
    n1=cur=n;
    vector<int> a, b;
    for(int i = 1, lst = 0;i<=2*n;i++)
    {
        int t = q(i);
        if(t==lst)
            b.pb(i);
        else
            a.pb(i);
        lst=t;
    }
    srand(rng());
    go(a,b,1,1);
}

• 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: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10