#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define INF 1000000021
#define MOD 1000000007
#define pb push_back
#define sqr(a) (a)*(a)
#define M(a, b) make_pair(a,b)
#define F first
#define S second
#define all(x) (x.begin(), x.end())
#define deb(x) cerr << #x << " = " << x << '\n'
#define N 222222
using namespace std;
using namespace __gnu_pbds;
typedef long double ld;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
const ld pi = 2 * acos(0.0);
template<class T> bool umin(T& a, T b){if(a>b){a=b;return 1;}return 0;}
template<class T> bool umax(T& a, T b){if(a<b){a=b;return 1;}return 0;}
template<class T, class TT> bool pal(T a, TT n){int k=0;for(int i=0;i<=n/2;i++){if(a[i]!=a[n-i-1]){k=1;break;}}return k?0:1;}
//int month[] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
int main()
{
int n, m, r, k, p;
cin >> n >> m >> r >> k >> p;
int a[n+2][m+2];
int dp[n + 2][m + 2];
memset(a, 0, sizeof a);
memset(dp, 0, sizeof dp);
for(int i = 1; i <= n; i ++)
for(int j = 1; j <= m; j ++)
cin >> a[i][j];
while(k --)
{
char t;
int x, y;
cin >> t >> x >> y;
if(t == 'W')
{
for(int i = 1; i <= r; i ++)
{
a[x][i] -= y;
if(a[x][i] < 0)
a[x][i] = 0;
}
}
else
if(t == 'E')
{
for(int i = m; i >= m - r + 1; i --)
{
a[x][i] -= y;
if(a[x][i] < 0)
a[x][i] = 0;
}
}
else
if(t == 'S')
{
for(int i = n; i >= n - r + 1; i --)
{
a[i][x] -= y;
if(a[i][x] < 0)
a[i][x] = 0;
}
}
else
{
for(int i = 1; i <= r; i ++)
{
a[i][x] -= y;
if(a[i][x] < 0)
a[i][x] = 0;
}
}
}
for(int i = 1; i <= n; i ++)
for(int j = 1; j <= m; j ++)
dp[i][j] = a[i][j] + dp[i - 1][j] + dp[i][j - 1] - dp[i - 1][j - 1];
int ans = 0;
for(int i = 1; i <= n; i ++)
for(int j = 1; j <= m; j ++)
{
if(i + p - 1 > n || j + p - 1 > m)
continue;
int o = dp[i + p - 1][j + p - 1] - dp[i - 1][j + p - 1] - dp[i + p - 1][j - 1] + dp[i - 1][j - 1];
umax(ans, o);
}
cout << ans;
getchar();
getchar();
return 0;
//ios::sync_with_stdio(false);
//cin.tie(0);
}
