#include <bits/stdc++.h>
using namespace std;
#define ll long long
struct T {
vector < int > tree;
T() {
}
T(int n) {
tree.resize(4 * n + 7);
}
void upd(int pos, int val, int v, int l, int r) {
if (l == r) {
tree[v] = val;
return ;
}
int mid = (l + r) >> 1;
if (pos <= mid) {
upd(pos, val, v + v, l, mid);
} else {
upd(pos, val, v + v + 1, mid + 1, r);
}
tree[v] = max(tree[v + v], tree[v + v + 1]);
}
int findleft(int val, int l, int r, int v, int tl, int tr) {
if (tree[v] < val) return -1;
if (tl == tr) return tl;
int mid = (tl + tr) >> 1;
if (l <= tl && tr <= r) {
if (tree[v + v] >= val) {
return findleft(val, l, r, v + v, tl, mid);
}
return findleft(val, l, r, v + v + 1, mid + 1, tr);
} else {
int ans = -1;
if (l <= mid && tree[v + v] >= val) {
ans = findleft(val, l, r, v + v, tl, mid);
}
if (mid + 1 <= r && ans == -1 && tree[v + v + 1] >= val) {
ans = findleft(val, l, r, v + v + 1, mid + 1, tr);
}
return ans;
}
}
int findright(int val, int l, int r, int v, int tl, int tr) {
if (tree[v] < val) return -1;
idf (tl == tr) return tl;
int mid = (tl + tr) >> 1;
if (l <= tl && tr <= r) {
if (tree[v + v + 1] >= val) {
return findright(val, l, r, v + v + 1, mid + 1, tr);
}
return findright(val, l, r, v + v, tl, mid);
} else {
int ans = -1;
if (mid + 1 <= r && tree[v + v + 1] >= val) {
ans = findright(val, l, r, v + v + 1, mid + 1, tr);
}
if (l <= mid && ans == -1 && tree[v + v] >= val) {
ans = findright(val, l, r, v + v, tl, mid);
}
return ans;
}
}
};
int n, m, k, r, p;
vector < vector < int > > mat;
vector < T > col, row;
main() {
scanf("%d %d %d %d %d", &n, &m, &r, &k, &p);
for (int i = 0; i < n; i++) {
mat.push_back(vector < int > (m));
for (int j = 0; j < m; j++) {
scanf("%d", &mat[i][j]);
}
}
for (int i = 0; i < n; i++)
row.push_back(T(m));
for (int i = 0; i < m; i++)
col.push_back(T(n));
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
row[i].upd(j, mat[i][j], 1, 0, m - 1);
col[j].upd(i, mat[i][j], 1, 0, n - 1);
}
}
while (k--) {
char tp;
tp = getchar();
if (tp == '\n') tp = getchar();
int in, h;
scanf("%d %d", &in, &h);
int i = 0;
in--;
if (tp == 'N') {
int pos = -1;
while (pos + 1 < n && i++ < r) {
pos = col[in].findleft(h, pos + 1, n - 1, 1, 0, n - 1);
if (pos == -1) break;
mat[pos][in]--;
col[in].upd(pos, mat[pos][in], 1, 0, n - 1);
row[pos].upd(in, mat[pos][in], 1, 0, m - 1);
}
} else if (tp == 'S') {
int pos = n;
while (pos - 1 >= 0 && i++ < r) {
pos = col[in].findright(h, 0, pos - 1, 1, 0, n - 1);
if (pos == -1) break;
mat[pos][in]--;
col[in].upd(pos, mat[pos][in], 1, 0, n - 1);
row[pos].upd(in, mat[pos][in], 1, 0, m - 1);
}
} else if (tp == 'W') {
int pos = -1;
while (pos + 1 < m && i++ < r) {
pos = row[in].findleft(h, pos + 1, m - 1, 1, 0, m - 1);
if (pos == -1) break;
mat[in][pos]--;
row[in].upd(pos, mat[in][pos], 1, 0, m - 1);
col[pos].upd(in, mat[in][pos], 1, 0, n - 1);
}
} else {
int pos = m;
while (pos - 1 >= 0 && i++ < r) {
pos = row[in].findright(h, 0, pos - 1, 1, 0, m - 1);
if (pos == -1) break;
mat[in][pos]--;
row[in].upd(pos, mat[in][pos], 1, 0, m - 1);
col[pos].upd(in, mat[in][pos], 1, 0, n - 1);
}
}
}
ll sum[n][m];
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
sum[i][j] = mat[i][j];
if (i)
sum[i][j] += sum[i - 1][j];
if (j)
sum[i][j] += sum[i][j - 1];
if (i && j)
sum[i][j] -= sum[i - 1][j - 1];
}
}
ll ans = 0;
for (int i = p - 1; i < n; i++) {
ll cost = sum[i][p - 1];
if (i >= p) {
cost -= sum[i - p][p - 1];
}
ans = max(ans, cost);
}
for (int i = p - 1; i < m; i++) {
ll cost = sum[p - 1][i];
if (i >= p) {
cost -= sum[p - 1][i - p];
}
ans = max(ans, cost);
}
for (int i = p; i < n; i++) {
for (int j = p; j < m; j++) {
ans = max(ans, sum[i][j] - sum[i][j - p] - sum[i - p][j] + sum[i - p][j - p]);
}
}
cout << ans;
}
Compilation message
ufo.cpp: In member function 'int T::findright(int, int, int, int, int, int)':
ufo.cpp:51:3: error: 'idf' was not declared in this scope
idf (tl == tr) return tl;
^~~
ufo.cpp:51:3: note: suggested alternative: 'id_t'
idf (tl == tr) return tl;
^~~
id_t
ufo.cpp: At global scope:
ufo.cpp:75:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main() {
^
ufo.cpp: In function 'int main()':
ufo.cpp:76:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d %d %d %d", &n, &m, &r, &k, &p);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ufo.cpp:80:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &mat[i][j]);
~~~~~^~~~~~~~~~~~~~~~~~
ufo.cpp:98:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &in, &h);
~~~~~^~~~~~~~~~~~~~~~~~
