Submission #1267104

#	Time	Username	Problem	Language	Result	Execution time	Memory
1267104		abdelhakim	Hack (APIO25_hack)	C++20	78.10 / 100	124 ms	1284 KiB

hack

#include "hack.h"
#include <bits/stdc++.h>
#define ll long long
#define dbg(x) cerr << #x << ' ' << x << endl;
using namespace std;
ll val(ll l, ll r)
{
    ll m=sqrt(r-l+1);
   
    vector<ll> v;
    for (int i=1;i<=m;i++)
    {
        v.push_back(i);
    }
    for (int i=m+l;i<=r;i+=m)
    {
        v.push_back(i);
    }
    if(v.back() < r) v.push_back(r);
    return collisions(v);
}
int hack(){
    ll l=2;
    ll r=1e9;
    while (l<r)
    {
        ll mid=ceil((l+r)/2.0);
        if(val(l,mid)>=1)
        {
            r=mid-1;
        }
        else
        {
            l=mid;
        }
    }
    return l;
}

• Subtask 0: 0 / 0
• Subtask 1: 8 / 8
• Subtask 2: 17 / 17
• Subtask 3: 53.0948 / 75