Submission #1247413

#	Time	Username	Problem	Language	Result	Execution time	Memory
1247413		noop	Hack (APIO25_hack)	C++20	78.10 / 100	124 ms	1284 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=max(l+1,gap+1); i<=r; i+=gap)
        v.push_back(i);
    v.push_back(r+1);
    return collisions(v);
}

int hack(){
    int l=1,r=1000000000;
    while (l<r){
        int mid=l+r>>1;
        if (query(l,mid))
            r=mid;
        else
            l=mid+1;
    }
    return l;
}

• Subtask 0: 0 / 0
• Subtask 1: 8 / 8
• Subtask 2: 17 / 17
• Subtask 3: 53.0866 / 75