Submission #1238952

#	Time	Username	Problem	Language	Result	Execution time	Memory
1238952		noop	Hack (APIO25_hack)	C++20	0 / 100	1 ms	320 KiB

hack

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

bool query (int l, int r){
    int gap=sqrt(r-l+1);
    vector<long long> v;
    for (int i=1; i<=gap; ++i)
        v.push_back(i);
    for (int i=r; i>=l; i-=gap)
        v.push_back(i);
    return collisions(v);
}

int hack(){
    int l=1,r=1000000;
    while (l<r){
        int mid=l+r+1>>1;
        if (query(l,mid))
            l=mid;
        else
            r=mid-1;
    }
    return l;
}

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