Submission #1018810

#	Time	Username	Problem	Language	Result	Execution time	Memory
1018810		vjudge1	Self Study (JOI22_ho_t2)	C++17	0 / 100	119 ms	5392 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define tobit(n) bitset<20>(n) //выводит 20 элементов в битовую систему
#define all(v) (v).begin(), (v).end() 
#define rtt(v, k) rotate(v.begin(), v.begin() + k, v.end()); //move k elements back
signed main(){
    int n, m; cin >> n >> m;
    vector<int> a(n), b(n);
    for(auto &to : a) cin >> to;
    for(auto &to : b) cin >> to;
    int l = 0, r = 1e18 + 6;
    auto check = [&](int p){
        int t = 0;
        for(int i = 0; i < n; i++){
            if(b[i] > a[i]){
                int b_ = (p + b[i] - 1) / b[i]; t += b_;
            } else {
                if(a[i] * m >= p){
                    int a_ = (p + a[i] - 1) / a[i]; t += a_;
                } else {
                    int a_ = m;
                    int b_ = (p - a[i] * a_ + b[i] - 1) / b[i]; t += a_ + b_;
                }
            }
        } return t <= n * m;
    }; while(r > l + 1){
        int m = (l + r) / 2;
        if(check(m)) l = m;
        else r = m;
    } if(check(r)) cout << r;
    else cout << l;
}
// NEED TO FAST CIN && COUT //
const int fastIO = [](){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    return 0;
}();

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