Submission #1212300

#	Time	Username	Problem	Language	Result	Execution time	Memory
1212300		fadak-14	Hack (APIO25_hack)	C++20	100 / 100	81 ms	964 KiB

hack

#include "hack.h"
#include <bits/stdc++.h>
#define ll long long
#define db double
#define ld long double
#define endl '\n'
#define eb emplace_back
#define em emplace
#define pb push_back
#define pf push_front
#define pp pop_back
#define fr first
#define sc second
#define sz size
using namespace std;
const ll mx = 1e9;
signed hack() {
    ll s = mx / 2 + 1 ,e = mx ;
    ll v ,x ,md;
    vector<ll> tp , arr ;
    while(s <= e) {
        md = s + e >> 1 ,tp.clear() ;
        x= (ll)sqrt(md - s + 1) ;
        for(ll i =1 ; i <= x ; i++) tp.pb(i) ;
        for(ll i =1 ;s + i * x <= md; i++) tp.pb(s + i * x) ;
        tp.pb(md + 1) ;
        if(collisions(tp) > 0) e = md - 1 , v = md ;
        else s = md + 1 ;
    }
    x = v ;
    for(ll i = 2 ; i * i <= v; i++) {
        if(x % i) continue ;
        arr.pb(i) ;
        while(x % i == 0) x /= i ;
    }
    if(x > 1) arr.pb(x) ;
    for(ll i: arr) {
        while(v%i == 0 && collisions({1 , v/ i + 1}) > 0) v/=i;
    }
    return v;
}

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