Submission #1154051

#	Time	Username	Problem	Language	Result	Execution time	Memory
1154051		dnnnda	Self Study (JOI22_ho_t2)	C++20	25 / 100	1093 ms	2788 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define S second
#define F first
#define ll long long
//#pragma GCC optimize("Ofast, unroll-loop")
//#pragma GCC target("avx,avx2")
#pragma GCC optimize("O3")
const int inf=0x3f3f3f3f;
const ll inff=0x3f3f3f3f3f3f3f3f;
const int X=998244353;

int a[300005], b[300005];
ll divv(ll a, ll b){ // a/b
    return (a+b-1)/b;
}

signed main(){
    ios::sync_with_stdio(0), cin.tie(0);
    int n; ll m; cin >> n >> m;
    for(int i=1 ; i<=n ; i++) cin >> a[i];
    for(int i=1 ; i<=n ; i++) cin >> b[i];
    for(int i=1 ; i<=n ; i++) a[i]=max(a[i],b[i]);
    auto ok=[&](ll goal)->bool{
        ll t=0;
        for(int i=1 ; i<=n ; i++){
            ll c=divv(goal,a[i]);
            if(c<m) t+=m-c;
            else{
                ll req=goal-m*a[i];
                t-=divv(req,b[i]);
            }
            //cout << c << ' ' << t << '\n';
            if(t<=-inff) return 0;
        }
        return t>=0;
    };
    ll ans=0;
    for(ll jump=300'000'000'000'000LL ; jump ; jump>>=1){
        while(ans+jump<=inff&&ok(ans+jump)) ans+=jump;
    }
    cout << ans << '\n';


    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 25 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 9