Submission #676614

#	Time	Username	Problem	Language	Result	Execution time	Memory
676614		owoovo	Self Study (JOI22_ho_t2)	C++14	100 / 100	236 ms	10868 KiB

Main

#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll ori[2][3000010]={};
const ll maxn=1e18+100;
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    ll n,w;
    cin>>n>>w;
    for(int i=0;i<n;i++){
        cin>>ori[0][i];
    }
    for(int i=0;i<n;i++){
        cin>>ori[1][i];
    }
    ll l=1,r=maxn;
    while(l!=r){
        ll m=(l+r+1)/2,c=n*w;
        for(int i=0;i<n;i++){
            if(ori[0][i]>ori[1][i]){
                if(ori[0][i]*w>=m){
                    c-=((m-1)/ori[0][i])+1;
                }else{
                    c-=w;
                    c-=((m-ori[0][i]*w-1)/ori[1][i])+1;
                }
            }else{
                c-=((m-1)/ori[1][i])+1;
            }
            if(c<0){
                break;
            }
        }
        if(c>=0){
            l=m;
        }else{
            r=m-1;
        }
    }
    cout<<l<<'\n';
    return 0;
}

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