Submission #1311075

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311075		wangzhiyi33	Self Study (JOI22_ho_t2)	C++20	100 / 100	131 ms	5196 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long 
#pragma GCC optimize("O3,unroll-loops")
#define fir first
#define sec second
#define pb push_back

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,m; cin>>n>>m;
    int a[n+1],b[n+1];
    for(int q=1;q<=n;q++)cin>>a[q];
    for(int q=1;q<=n;q++)cin>>b[q];

    int l=1,r=1e18;
    int ans=0;

    while(l<=r){
        int mid=(l+r)/2;
        int tot=0;
        for(int q=1;q<=n && tot<=n*m;q++){
            if(a[q]<=b[q]){
                tot+=(mid+b[q]-1)/b[q];
            }
            else{
                int sisa=mid-m*a[q];
                if(sisa>=0){
                    tot+=(m+ (sisa+b[q]-1)/b[q]);
                }
                else{
                    tot+=(mid+a[q]-1)/a[q];
                }
            }
        }

        if(tot<=n*m){
            ans=mid; l=mid+1;
        }
        else{
            r=mid-1;
        }
    }
    cout<<ans<<endl;
}

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