제출 #1300201

#제출 시각아이디문제언어결과실행 시간메모리
1300201faricaHack (APIO25_hack)C++20
78.10 / 100
168 ms1288 KiB
#include "hack.h"
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using vi = vector<ll>;


const int R = 1e9;

int hack(){
	int l=1, r=R;
	while(l<r) {
		int m = (l+r)/2, x = (m-l+1), sq = sqrt(x);
		vi v;
		for(int i=1; i<=sq; ++i) v.push_back(i);
		int cnt = m+1;
		while(cnt > sq) {
			v.push_back(cnt);
			cnt -= sq;
			if(l >= cnt) break;
		}
		if(collisions(v) > 0) r = m;
		else l = m + 1;
	}

    return r;
}
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