Submission #1246077

#	Time	Username	Problem	Language	Result	Execution time	Memory
1246077		KALARRY	Hack (APIO25_hack)	C++20	8 / 100	329 ms	11320 KiB

hack

//chockolateman
#include<bits/stdc++.h>
#include <vector>
#include "hack.h"

using namespace std;

bool done[1000005];
long long memo[1000005];
vector<int> nums;

long long query(long long x)
{
    if(done[x])
        return memo[x];
    done[x] = true;
    vector<long long> temp;
    temp.push_back(1);
    temp.push_back(1+x);
    memo[x] = collisions(temp);
    return memo[x];
}

int hack(){
    memset(done,false,sizeof(done));
    memset(memo,0ll,sizeof(memo));
    std::vector<long long> temp;
    bool broke = false;
    int counter = -1;
    if(nums.empty())
        for(int i = 1 ; i <= 500000 ; i++)
            nums.push_back(i);
    random_shuffle(nums.begin(),nums.end());
    while(!broke)
    {
        temp.clear();
        counter++;
        temp.push_back(1);
        temp.push_back(1 + nums[counter]);
        if(query(nums[counter]))
            broke = true;
    }
    int n = nums[counter];
    for(int x = 1 ; x <= n ; x++)
        if(n%x==0)
        {
            temp.clear();
            temp.push_back(1);
            temp.push_back(1 + x);
            if(query(x))
                n = x;
        }
    return n;
}

• Subtask 0: 0 / 0
• Subtask 1: 8 / 8
• Subtask 2: 0 / 17
• Subtask 3: 0 / 75