#include <bits/stdc++.h> #define ll long long using namespace std; const int mxN = 1e6+5; ll seg[4*mxN], lz[4*mxN]; void push(int u) { seg[u<<1] += lz[u]; seg[u<<1|1] += lz[u]; lz[u<<1] += lz[u]; lz[u<<1|1] += lz[u]; lz[u] = 0; } void build(int l, int r, int u) { if (l == r) seg[u] = 0, lz[u] = 0; else { int m = l + (r-l)/2; build(l, m, u<<1); build(m+1, r, u<<1|1); seg[u] = min(seg[u<<1], seg[u<<1|1]); lz[u] = 0; } } void upd(int l, int r, int x, int y, ll k, int u) { if (x <= l && r <= y) seg[u] += k, lz[u] += k; else { push(u); int m = l + (r-l)/2; if (m >= x) upd(l, m, x, y, k, u<<1); if (m+1 <= y) upd(m+1, r, x, y, k, u<<1|1); seg[u] = min(seg[u<<1], seg[u<<1|1]); } } ll qr(int l, int r, int x, int y, int u) { if (x <= l && r <= y) return seg[u]; else { push(u); int m = l + (r-l)/2; ll mn = LLONG_MAX; if (m >= x) mn = min(mn, qr(l, m, x, y, u<<1)); if (m+1 <= y) mn = min(mn, qr(m+1, r, x, y, u<<1|1)); return mn; } } int main() { ios::sync_with_stdio(0), cin.tie(0); int n, m; cin >> n >> m; ll b, p; cin >> b >> p; vector <tuple <int, int, int, ll>> I, O; for (int i = 0; i < p; i++) { int x1, x2, y1, y2; ll c; cin >> x1 >> y1 >> x2 >> y2 >> c; I.emplace_back(x1, y1, y2, c), O.emplace_back(x2+1, y1, y2, c); } int L = 1, R = min(m, n), ans = 0; while (L <= R) { int x = L + (R-L)/2;// x = 4; vector <tuple <int, int, int, ll>> v; for (auto &[x1, y1, y2, c] : I) v.emplace_back(max(1, x1 - x + 1), max(1, y1 - x + 1), y2, c); for (auto &[x2, y1, y2, c] : O) v.emplace_back(x2, max(1, y1 - x + 1), y2, -c); sort(v.begin(), v.end()); build(1, m, 1); int ok = 0; for (int i = 0; i < v.size(); i++) { auto &[xi, y1, y2, c] = v[i]; if (xi + x - 1 > n) break; upd(1, m, y1, y2, c, 1); if (i < v.size()-1 && xi == get<0>(v[i+1])) continue; // cerr << qr(1, n, 1, n - x + 1, 1) << '\n'; // for (int i = 1; i <= m; i++) cerr << qr(1, m, i, i, 1) << ' '; cerr << '\n'; if (qr(1, m, 1, m - x + 1, 1) <= b) { ok = 1; break; } } if (ok) ans = x, L = x+1; else R = x-1; // break; } cout << ans << '\n'; } /* do bsearch on square size k then sweepline, across x, like sliding window size k when add rectangle [y1, y2]; add the value to segtree from [y1-x+1, y2] then find min; if min <= B then OK; else continue */