Submission #1183817

#	Time	Username	Problem	Language	Result	Execution time	Memory
1183817		apelpisia	Self Study (JOI22_ho_t2)	C++20	100 / 100	122 ms	5136 KiB

Main

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const ll nx = 3e5+5;
ll n, m, a[nx], b[nx], l = 0, r = LLONG_MAX, md;

bool check(){
    ll cnt = 0;
    for(ll i=0; i<n; i++){
        if(a[i]>b[i]){
            if(a[i]*m>=md){
                cnt+=(md/a[i]+(md%a[i]==0 ? 0 : 1));
            } else{
                cnt+=(m+(md-a[i]*m)/b[i]+((md-a[i]*m)%b[i]==0 ? 0 : 1));
            }
        } else{
            cnt+=(md/b[i] + (md%b[i]==0 ? 0 : 1));
        }
        if(cnt>n*m) return false;
    }
    return true;
}

int main(){
    cin.tie(NULL)->sync_with_stdio(false);
    cin >> n >> m;
    for(ll i=0; i<n; i++) cin >> a[i];
    for(ll i=0; i<n; i++) cin >> b[i];
    while(l<r){
        md = l+(r-l)/2;
        if(check()) l = md+1;
        else r = md;
    }
    cout << l-1;

    return 0;
}

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