Submission #1238959

#	Time	Username	Problem	Language	Result	Execution time	Memory
1238959		noop	Hack (APIO25_hack)	C++20	25 / 100	189 ms	1344 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+1; i>gap; i-=gap){
        v.push_back(i);
        if (i<=l+gap)
            break;
    }
    return collisions(v);
}

int hack(){
    int l=1,r=1000000000;
    while (l<r){
        int mid=l+r>>1;
        if (query(0,mid))
            r=mid;
        else
            l=mid+1;
    }
    return l;
}

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