Submission #1267670

#	Time	Username	Problem	Language	Result	Execution time	Memory
1267670		enzy	Self Study (JOI22_ho_t2)	C++20	0 / 100	48 ms	2628 KiB

Main

#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int maxn=2e5+10;
const ll inf=2e18+10;
ll a[maxn], b[maxn];
bool check(ll x, ll n, ll m){
    ll qtd=0;
    for(int i=1;i<=n;i++){
        if(b[i]>=a[i]) qtd+=(x+b[i]-1)/b[i];
        else{
            if(a[i]*m>=x) qtd+=(x+a[i]-1)/a[i];
            else{
                ll y=x-a[i]*m;
                qtd+=m;
                qtd+=(y+b[i]-1)/b[i];
            }
        }
    }
    return qtd<=n*m;
}
int main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    ll n, m; cin >> n >> m;
    for(int i=1;i<=n;i++) cin >> a[i];
    for(int i=1;i<=n;i++) cin >> b[i];
    ll l=0, r=inf;
    while(l<r){
        ll mid=((r-l+1)/2)+l;
        if(check(mid,n,m)) l=mid;
        else r=mid-1;
    }
    cout << l << endl;
}

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