Submission #923157

#	Time	Username	Problem	Language	Result	Execution time	Memory
923157		NValchanov	CONSUL (info1cup19_consul)	C++17	86.85 / 100	12 ms	344 KiB

consul

#include<bits/stdc++.h>
#include "grader.h"

using namespace std;

typedef long long ll;

vector<bool>used;

void solve(int n)
{
    srand(0);
    used.resize(n+1);
    for(int i=1;i<=n;i++)
    {
        used[i]=false;
    }
    int q=0;
    int border=0;
    while(q<=60 && 2*border<=n)
    {
        q++;
        if(q==60)
            return;
        int left=1, right=n;
        int idx=rand()%(right-left+1)+left;
        while(used[idx])
        {
            idx=rand()%(right-left+1)+left;
        }
        used[idx]=true;
        int val=kth(idx);
        int valcnt=cnt(val);
        if(3*valcnt > n)
        {
            say_answer(val);
            return;
        }
        q++;
        border++;
    }
    say_answer(-1);
}

• Subtask 1: 15 / 15
• Subtask 2: 19.2 / 20
• Subtask 3: 52.650000000000006 / 65