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#1702. 【CSP-S 2022】策略游戏(game,民间数据)
https://sjzezoj.com/submission/62996
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169
S2OJ/1702/1702.cpp
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169
S2OJ/1702/1702.cpp
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#include <iostream>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = 1e5 + 5;
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const long long INF = 0x3f3f3f3f3f3f3f3f;
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int n, m, q;
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long long a[N], b[N];
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struct node {
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int l, r, cnt;
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long long min, max;
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node(int _l = 0, int _r = 0)
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: l(_l), r(_r), cnt(0), min(INF), max(-INF) {}
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} tr1a[N << 2], tr1b[N << 2], tr2a[N << 2], tr2b[N << 2];
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void pushup(node* tr, int u) {
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tr[u].cnt = tr[u << 1].cnt + tr[u << 1 | 1].cnt;
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tr[u].min = std::min(tr[u << 1].min, tr[u << 1 | 1].min);
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tr[u].max = std::max(tr[u << 1].max, tr[u << 1 | 1].max);
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}
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void build1(node* tr, long long* a, int u, int l, int r) {
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tr[u] = node(l, r);
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if (l == r) {
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if (a[l] >= 0) {
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tr[u].max = tr[u].min = a[l];
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tr[u].cnt = 1;
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}
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return;
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}
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int mid = l + r >> 1;
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build1(tr, a, u << 1, l, mid);
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build1(tr, a, u << 1 | 1, mid + 1, r);
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pushup(tr, u);
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}
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void build2(node* tr, long long* a, int u, int l, int r) {
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tr[u] = node(l, r);
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if (l == r) {
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if (a[l] <= 0) {
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tr[u].max = tr[u].min = a[l];
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tr[u].cnt = 1;
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}
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return;
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}
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int mid = l + r >> 1;
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build2(tr, a, u << 1, l, mid);
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build2(tr, a, u << 1 | 1, mid + 1, r);
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pushup(tr, u);
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}
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long long query_min(node* tr, int u, int l, int r) {
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if (l <= tr[u].l && tr[u].r <= r) return tr[u].min;
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int mid = tr[u].l + tr[u].r >> 1;
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long long res = INF;
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if (l <= mid) res = std::min(res, query_min(tr, u << 1, l, r));
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if (r > mid) res = std::min(res, query_min(tr, u << 1 | 1, l, r));
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return res;
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}
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long long query_max(node* tr, int u, int l, int r) {
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if (l <= tr[u].l && tr[u].r <= r) return tr[u].max;
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int mid = tr[u].l + tr[u].r >> 1;
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long long res = -INF;
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if (l <= mid) res = std::max(res, query_max(tr, u << 1, l, r));
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if (r > mid) res = std::max(res, query_max(tr, u << 1 | 1, l, r));
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return res;
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}
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int query_cnt(node* tr, int u, int l, int r) {
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if (l <= tr[u].l && tr[u].r <= r) return tr[u].cnt;
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int mid = tr[u].l + tr[u].r >> 1;
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int cnt = 0;
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if (l <= mid) cnt += query_cnt(tr, u << 1, l, r);
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if (r > mid) cnt += query_cnt(tr, u << 1 | 1, l, r);
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return cnt;
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> n >> m >> q;
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for (int i = 1; i <= n; i++) {
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cin >> a[i];
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}
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for (int i = 1; i <= m; i++) {
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cin >> b[i];
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}
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build1(tr1a, a, 1, 1, n);
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build2(tr1b, a, 1, 1, n);
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build1(tr2a, b, 1, 1, m);
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build2(tr2b, b, 1, 1, m);
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while (q--) {
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int l1, r1, l2, r2;
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cin >> l1 >> r1 >> l2 >> r2;
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long long max_1a = query_max(tr1a, 1, l1, r1),
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min_1a = query_min(tr1a, 1, l1, r1);
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long long max_1b = query_max(tr1b, 1, l1, r1),
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min_1b = query_min(tr1b, 1, l1, r1);
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long long max_2a = query_max(tr2a, 1, l2, r2),
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min_2a = query_min(tr2a, 1, l2, r2);
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long long max_2b = query_max(tr2b, 1, l2, r2),
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min_2b = query_min(tr2b, 1, l2, r2);
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int cnt_1a = query_cnt(tr1a, 1, l1, r1),
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cnt_1b = query_cnt(tr1b, 1, l1, r1);
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int cnt_2a = query_cnt(tr2a, 1, l2, r2),
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cnt_2b = query_cnt(tr2b, 1, l2, r2);
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if (!cnt_1a) { // 1. [l1, r1] 间无正数
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if (!cnt_2a) { // a. [l2, r2] 间无正数
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cout << min_1b * max_2b << endl;
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} else if (!cnt_2b) { // b [l2, r2] 间无负数
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cout << max_1b * max_2a << endl;
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} else {
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cout << max_1b * max_2a << endl;
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}
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} else if (!cnt_1b) { // 2. [l1, r1] 间无负数
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if (!cnt_2a) { // a. [l2, r2] 间无正数
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cout << min_1a * min_2b << endl;
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} else if (!cnt_2b) { // b [l2, r2] 间无负数
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cout << max_1a * min_2a << endl;
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} else {
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cout << min_1a * min_2b << endl;
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}
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} else {
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if (!cnt_2a) { // a. [l2, r2] 间无正数
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cout << min_1b * max_2b << endl;
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} else if (!cnt_2b) { // b [l2, r2] 间无负数
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cout << max_1a * min_2a << endl;
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} else {
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cout << std::max(max_1b * max_2a, min_1a * min_2b) << endl;
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}
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}
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}
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return 0;
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}
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