/*
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("O3")
#pragma GCC target ("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
*/
#include<bits/stdc++.h>
#define ld long double
#define sz(v) (int)v.size()
#define ll long long
#define pb push_back
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define nl "\n"
using namespace std;
using pii = pair<int, int>;
const int N = (int)1e6 + 7; // make sure this is right
const int M = (int)1e3 + 7;
const int inf = (int)2e9 + 7;
const ll INF = (ll)3e18 + 7;
const double PI = acos(-1);
ll MOD = (ll)1e9 + 7; // make sure this is right
bool bit(int x, int i) {
return x >> i & 1;
}
int sum(int x, int y) {
x += y;
if(x >= MOD) x -= MOD;
return x;
}
pii dir[] = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
int n, m, r, q, p;
vector<int> t[N], o[N];
vector<int> a[N];
void build(int i, int v, int tl, int tr) {
if(tl == tr) {
t[i][v] = a[i][tl];
return;
}
int mid = (tl + tr) >> 1;
build(i, v * 2, tl, mid);
build(i, v * 2 + 1, mid + 1, tr);
t[i][v] = max(t[i][v * 2], t[i][v * 2 + 1]);
}
void build2(int i, int v, int tl, int tr) {
if(tl == tr) {
o[i][v] = a[tl][i];
return;
}
int mid = (tl + tr) >> 1;
build2(i, v * 2, tl, mid);
build2(i, v * 2 + 1, mid + 1, tr);
o[i][v] = max(o[i][v * 2], o[i][v * 2 + 1]);
}
void upd(int i, int v, int tl, int tr, int id, int x) {
if(tl == tr) {
t[i][v] = x;
return;
}
int mid = (tl + tr) >> 1;
if(id <= mid)
upd(i, v * 2, tl, mid, id, x);
else
upd(i, v * 2 + 1, mid + 1, tr, id, x);
t[i][v] = max(t[i][v * 2], t[i][v * 2 + 1]);
}
void upd2(int i, int v, int tl, int tr, int id, int x) {
if(tl == tr) {
o[i][v] = x;
return;
}
int mid = (tl + tr) >> 1;
if(id <= mid)
upd2(i, v * 2, tl, mid, id, x);
else
upd2(i, v * 2 + 1, mid + 1, tr, id, x);
o[i][v] = max(o[i][v * 2], o[i][v * 2 + 1]);
}
int get1(int i, int v, int tl, int tr, int l, int val) {
if(tr < l)
return -1;
if(tl == tr) {
return (a[i][tl] >= val ? tl : -1);
}
int mid = (tl + tr) >> 1, s = -1;
if(t[i][v * 2] >= val) s = get1(i, v * 2, tl, mid, l, val);
if(s == -1) s = get1(i, v * 2 + 1, mid + 1, tr, l, val);
return s;
}
int get2(int i, int v, int tl, int tr, int l, int val) {
if(tl > l)
return -1;
if(tl == tr) {
return (a[i][tl] >= val ? tl : -1);
}
int mid = (tl + tr) >> 1, s = -1;
if(t[i][v * 2 + 1] >= val) s = get2(i, v * 2 + 1, mid + 1, tr, l, val);
if(s == -1) s = get2(i, v * 2, tl, mid, l, val);
return s;
}
int get3(int i, int v, int tl, int tr, int l, int val) {
if(tr < i)
return -1;
if(tl == tr) {
return (a[tl][i] >= val ? tl : -1);
}
int mid = (tl + tr) >> 1, s = -1;
if(o[i][v * 2] >= val) s = get3(i, v * 2, tl, mid, l, val);
else s = get3(i, v * 2 + 1, mid + 1, tr, l, val);
return s;
}
void solve() {
cin >> n >> m >> r >> q >> p;
for(int i = 1; i <= n; ++i) {
a[i].resize(m + 1);
t[i].resize(4 * m + 7);
for(int j = 1; j <= m; ++j) {
cin >> a[i][j];
}
build(i, 1, 1, m);
}
for(int i = 1; i <= m; ++i) {
o[i].resize(4 * n + 1);
build2(i, 1, 1, n);
}
while(q--) {
char tp;
cin >> tp;
int x, y;
cin >> x >> y;
if(tp == 'W') {
int i = 0, cnt = r;
while(cnt--) {
if(i == m) break;
i = get1(x, 1, 1, m, i + 1, y);
if(i == -1) break;
a[x][i]--;
upd(x, 1, 1, m, i, a[x][i]);
upd2(i, 1, 1, n, x, a[x][i]);
}
}
if(tp == 'E') {
int i = m + 1, cnt = r;
while(cnt--) {
if(i == 1) break;
i = get2(x, 1, 1, m, i - 1, y);
if(i == -1) break;
a[x][i]--;
upd(x, 1, 1, m, i, a[x][i]);
upd2(i, 1, 1, n, x, a[x][i]);
}
}
if(tp == 'N') {
int i = 0, cnt = r;
while(cnt--) {
if(i == n) break;
i = get3(x, 1, 1, n, i + 1, y);
if(i == -1) break;
a[i][x]--;
upd(i, 1, 1, n, x, a[i][x]);
upd2(x, 1, 1, n, i, a[i][x]);
}
}
if(tp == 'S') {
for(int i = n, cnt = r; i >= 1 && cnt; --i) {
if(a[i][x] >= y) {
a[i][x]--;
upd(i, 1, 1, m, x, a[i][x]);
upd2(x, 1, 1, n, i, a[i][x]);
cnt--;
}
}
}
}
ll ans = 0;
for(int i = 1; i <= n - p + 1; ++i) {
for(int j = 1; j <= m - p + 1; ++j) {
ll cur = 0;
for(int ii = i; ii <= i + p - 1; ++ii) {
for(int jj = j; jj <= j + p - 1; ++jj) {
cur += a[ii][jj];
}
}
ans = max(ans, cur);
}
}
cout << ans;
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
// freopen("g.in", "r", stdin);
// freopen("g.out", "w", stdout);
int test = 1;
//cin >> test;
for(int i = 1; i <= test; ++i) {
//cout << "Case #" << i << ": ";
solve();
}
return 0;
}
