Submission #950479

#	Time	Username	Problem	Language	Result	Execution time	Memory
950479		arbuzick	Garden (JOI23_garden)	C++17	45 / 100	3016 ms	14008 KiB

garden

#include <bits/stdc++.h>

using namespace std;

void solve() {
    int n, m, d;
    cin >> n >> m >> d;
    vector<int> p(n), q(n);
    for (int i = 0; i < n; ++i) {
        cin >> p[i] >> q[i];
    }
    vector<int> r(m), s(m);
    for (int i = 0; i < m; ++i) {
        cin >> r[i] >> s[i];
    }
    int ans = d * d;
    if (m <= 8) {
        vector<int> p_nw, q_nw;
        for (int i = 0; i < n; ++i) {
            p_nw.push_back(p[i]);
            p_nw.push_back(p[i] + d);
            q_nw.push_back(q[i]);
            q_nw.push_back(q[i] + d);
        }
        sort(p_nw.begin(), p_nw.end());
        sort(q_nw.begin(), q_nw.end());
        for (int mask = 0; mask < (1 << m); ++mask) {
            int mnx = d, mny = d;
            for (int i = 0; i < d; ++i) {
                int posx = lower_bound(p_nw.begin(), p_nw.end(), i) - p_nw.begin();
                int rx = p_nw[posx + n - 1] + 1;
                for (int j = 0; j < m; ++j) {
                    if (mask & (1 << j)) {
                        if (i <= r[j]) {
                            rx = max(rx, r[j] + 1);
                        } else {
                            rx = max(rx, r[j] + d + 1);
                        }
                    }
                }
                mnx = min(mnx, rx - i);
                int posy = lower_bound(q_nw.begin(), q_nw.end(), i) - q_nw.begin();
                int ry = q_nw[posy + n - 1] + 1;
                for (int j = 0; j < m; ++j) {
                    if (!(mask & (1 << j))) {
                        if (i <= s[j]) {
                            ry = max(ry, s[j] + 1);
                        } else {
                            ry = max(ry, s[j] + d + 1);
                        }
                    }
                }
                mny = min(mny, ry - i);
            }
            ans = min(ans, mnx * mny);
        }
    } else {
        for (int lx = 0; lx < d; ++lx) {
            for (int ly = 0; ly < d; ++ly) {
                int rx = lx + 1, ry = ly + 1;
                for (int i = 0; i < n; ++i) {
                    if (lx <= p[i]) {
                        rx = max(rx, p[i] + 1);
                    } else {
                        rx = max(rx, p[i] + d + 1);
                    }
                    if (ly <= q[i]) {
                        ry = max(ry, q[i] + 1);
                    } else {
                        ry = max(ry, q[i] + d + 1);
                    }
                }
                vector<int> inds(m);
                iota(inds.begin(), inds.end(), 0);
                sort(inds.begin(), inds.end(), [&](int i, int j) {
                    int ri = rx, rj = rx;
                    if (lx <= r[i]) {
                        ri = max(ri, r[i] + 1);
                    } else {
                        ri = max(ri, r[i] + d + 1);
                    }
                    if (lx <= r[j]) {
                        rj = max(rj, r[j] + 1);
                    } else {
                        rj = max(rj, r[j] + d + 1);
                    }
                    return ri < rj;
                });
                vector<int> rys(m + 1);
                rys[m] = ry;
                for (int i = m - 1; i >= 0; --i) {
                    int vl = 0;
                    if (ly <= s[inds[i]]) {
                        vl = s[inds[i]] + 1;
                    } else {
                        vl = s[inds[i]] + d + 1;
                    }
                    rys[i] = max(rys[i + 1], vl);
                }
                for (int i = 0; i < m; ++i) {
                    ans = min(ans, (rx - lx) * (rys[i] - ly));
                    if (lx <= r[inds[i]]) {
                        rx = max(rx, r[inds[i]] + 1);
                    } else {
                        rx = max(rx, r[inds[i]] + d + 1);
                    }
                }
                ans = min(ans, (rx - lx) * (rys[m] - ly));
            }
        }
    }
    cout << ans << '\n';
}

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

• Subtask 1: 15 / 15
• Subtask 2: 6 / 6
• Subtask 3: 8 / 8
• Subtask 4: 16 / 16
• Subtask 5: 0 / 30
• Subtask 6: 0 / 25