제출 #1179453

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1179453		12345678	Self Study (JOI22_ho_t2)	C++17	100 / 100	122 ms	5204 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=0,r=3*1e18;
    while(l<r)
    {
        int mid=(l+r+1)/2;
        int cnt=0, f=0, vl;
        for(int i=0;i<n;i++)
        {
            if (cnt>n*m) break;
            int t=mid;
            if(b[i]>=a[i])
            {
                vl=(t%b[i])?(t/b[i]+1):t/b[i];
                if (cnt+vl>n*m) 
                {
                    f=1;
                    break;
                }
                cnt+=vl;
                continue;
            }
            if(a[i]*m>=t)
            {
                vl=(t%a[i])?(t/a[i]+1):t/a[i];
                if (cnt+vl>n*m) 
                {
                    f=1;
                    break;
                }
                cnt+=vl;
                continue;
            }
            if (cnt+m>n*m) 
            {
                f=1;
                break;
            }
            cnt+=m;
            t-=a[i]*m;
            vl=(t%b[i])?(t/b[i]+1):t/b[i];
            if (cnt+vl>n*m) 
            {
                f=1;
                break;
            }
            cnt+=vl;
        }
        //cout<<l<<" "<<r<<" "<<mid<<endl;
        if(!f)
        l=mid;
        else
        r=mid-1;
    }
    cout<<l;
}

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