제출 #1179920

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1179920		prideliqueee	Self Study (JOI22_ho_t2)	C++20	0 / 100	121 ms	5132 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    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];
    int l=1,r=1e18;
    while(l<r)
    {
        int mid=(l+r+1)/2;
        int cnt=0;
        for(int i=0;i<n;i++)
        {
            int t=mid;
            if(b[i]>=a[i])
            {
                if(t%b[i]==0)
                cnt+=t/b[i];
                else
                cnt+=t/b[i]+1;
                continue;
            }
            if(a[i]*m>=t)
            {
                if(t%a[i]==0)
                cnt+=t/a[i];
                else
                cnt+=t/a[i]+1;
                continue;
            }
            cnt+=m;
            t-=a[i]*m;
            if(t%b[i]==0)
            cnt+=t/b[i];
            else
            cnt+=t/b[i]+1;
        }
        //cout<<l<<" "<<r<<" "<<mid<<endl;
        if(cnt<=n*m)
        l=mid;
        else
        r=mid-1;
    }
    cout<<l;
}

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