Submission #889827

#	Time	Username	Problem	Language	Result	Execution time	Memory
889827		arbuzick	Self Study (JOI22_ho_t2)	C++17	100 / 100	203 ms	8540 KiB

Main

#include <bits/stdc++.h>

using namespace std;

void solve() {
    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];
    }
    long long l = 0, r = 1000000000 * 1LL * 1000000000 + 7;
    while (l < r - 1) {
        long long md = (l + r) / 2;
        long long free = 0;
        for (int i = 0; i < n; ++i) {
            if (a[i] <= b[i]) {
                free += m;
                free -= (md - 1) / b[i] + 1;
            } else if (a[i] * 1LL * m >= md) {
                long long vl = (md - 1) / a[i] + 1;
                free += m - vl;
            } else {
                free -= (md - a[i] * 1LL * m - 1) / b[i] + 1;
            }
            if (free < -n * 1LL * m) {
                break;
            }
        }
        if (free >= 0) {
            l = md;
        } else {
            r = md;
        }
    }
    cout << l << '\n';
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

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