제출 #1319581

#제출 시각아이디문제언어결과실행 시간메모리
1319581MuhammadSaramSelf Study (JOI22_ho_t2)C++20
0 / 100
229 ms5088 KiB
#include <bits/stdc++.h>

using namespace std;

#define int long long

signed main()
{
	int n,m;
	cin>>n>>m;
	int a[n], b[n];
	for (int i=0;i<n;i++)
		cin>>a[i];
	for (int i=0;i<n;i++)
		cin>>b[i], a[i]=max(a[i],b[i]);
	int s=0, e=1e18;
	while (s+1<e)
	{
		int mid=(s+e)/2,su=0;
		for (int i=0;i<n;i++)
		{
			if (a[i]*m>=mid)
				su+=m-(mid+a[i]-1)/a[i];
			else
				su-=(mid-a[i]*m+b[i]-1)/b[i];
		}
		if (su>=0)
			s=mid;
		else
			e=mid;
	}
	cout<<s<<endl;

	return 0;
}
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