Submission #920611

#	Time	Username	Problem	Language	Result	Execution time	Memory
920611		imarn	Self Study (JOI22_ho_t2)	C++14	100 / 100	209 ms	11136 KiB

Main

#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
#define vp vector<pii>
using namespace std;
const int N=4e5+5;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    ll n,M;cin>>n>>M;
    ll a[n],b[n];
    for(int i=0;i<n;i++)cin>>a[i];
    for(int i=0;i<n;i++)cin>>b[i];
    ll l=1,r=1e18;
    while(l<r){
        ll m=(l+r+1)>>1;
        ll cnt=0;
        for(int i=0;i<n;i++){
            if(b[i]>=a[i])cnt+=(m-1)/b[i]+1;
            else {
                ll tt=(m-1)/a[i]+1;
                if(tt<=M)cnt+=tt;
                else {
                    cnt+=M+(m-M*a[i]-1)/b[i]+1;
                }
            }if(cnt>M*n)break;
        }if(cnt<=M*n)l=m;
        else r=m-1;
    }cout<<l;
}

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