Submission #1366949

#	Time	Username	Problem	Language	Result	Execution time	Memory
1366949		Cebrayil09	Hack (APIO25_hack)	C++20	25 / 100	1291 ms	16472 KiB

hack

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

#define ll long long

int hack() {
    vector<ll> v;
    for(ll i = 1;i <= 1'000'000;i++) v.push_back(i);

    ll res = collisions(v);

    ll l = 1, r = v.back();
    while(l <= r) {
        ll mid = l + (r-l)/2;

        vector<int> cnt(mid);

        ll c = 0;
        for(ll &i : v) {
            c += cnt[i%mid];
            cnt[i%mid]++;
        }

        if(c == res) return mid;

        if(c > res) l = mid+1;
        else r = mid-1;
    }
}

Compilation message (stderr)

hack.cpp: In function 'int hack()':
hack.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type]
   30 | }
      | ^

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