제출 #781013

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
781013		ymm	Self Study (JOI22_ho_t2)	C++17	100 / 100	350 ms	11468 KiB

Main

#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (ll)(r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (ll)(l); --x)
typedef long long ll;
typedef std::pair<int, int> pii;
typedef std::pair<ll , ll > pll;
using namespace std;

int main()
{
	cin.tie(0) -> sync_with_stdio(false);
	ll n, m;
	cin >> n >> m;
	vector<ll> a(n), b(n);
	for (auto &x : a)
		cin >> x;
	Loop (i,0,n) {
		cin >> b[i];
		a[i] = max(a[i], b[i]);
	}
	ll l = 0, r = 2e18;
	while (l < r) {
		ll target = (l+r+1)/2;
		ll cnt = 0;
		Loop (i,0,n) {
			ll x = (target+a[i]-1)/a[i];
			if (x > m)
				x = m + (target - m*a[i] + b[i]-1)/b[i];
			cnt += x;
			if (cnt > 1e18)
				cnt = 1e18;
		}
		if (cnt <= n*m)
			l = target;
		else
			r = target-1;
	}
	cout << l << '\n';
}

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29
• Subtask 5: 9 / 9