Submission #630523

#	Time	Username	Problem	Language	Result	Execution time	Memory
630523		Ooops_sorry	Self Study (JOI22_ho_t2)	C++14	100 / 100	264 ms	9252 KiB

Main

#include<bits/stdc++.h>

using namespace std;

mt19937 rnd(51);

#define ll long long
#define pb push_back
#define ld long double

const ll INF = 1e18 + 100;

signed main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
#endif // LOCAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<int> 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 = 0, r = INF;
    while (r - l > 1) {
        ll mid = (r + l) / 2, need = 0, free = 0;
        for (int i = 0; i < n; i++) {
            if (a[i] > b[i]) {
                if ((ll)a[i] * m < mid) {
                    need += (mid - (ll)a[i] * m + b[i] - 1) / b[i];
                    need = min(need, INF);
                } else {
                    free += m - (mid + a[i] - 1) / a[i];
                }
            } else {
                need += (mid + b[i] - 1) / b[i];
                need = min(need, INF);
                free += m;
            }
        }
        if (need <= free) {
            l = mid;
        } else {
            r = mid;
        }
    }
    cout << l << endl;
    return 0;
}

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