#include<iostream>
#include<algorithm>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
#define ff first
#define ss second
const int N = 2e5 + 8;
const int dr[4] = { 0, 0, 1, -1 };
const int dc[4] = { 1, -1, 0, 0 };
int r, c, m, q, sr, sc;
int num[256];
string s;
namespace subtask1 {
bool vis_init[52][52], vis[52][52];
void init() {
vis_init[sr][sc] = true;
for (char c : s) {
sr += dr[num[c]];
sc += dc[num[c]];
vis_init[sr][sc] = true;
}
}
void dfs(int i, int j) {
vis[i][j] = true;
for (int k = 0, i2, j2; k < 4; ++k) {
i2 = i + dr[k], j2 = j + dc[k];
if (!vis[i2][j2]) dfs(i2, j2);
}
}
int solve(int ar, int ac, int br, int bc) {
int m = br - ar + 1, n = bc - ac + 1;
for (int i = 1; i <= m; ++i) vis[i][0] = vis[i][n + 1] = true;
for (int j = 1; j <= n; ++j) vis[0][j] = vis[m + 1][j] = true;
for (int i = 1; i <= m; ++i)
for (int j = 1; j <= n; ++j)
vis[i][j] = vis_init[i + ar - 1][j + ac - 1];
int cnt(0);
for (int i = 1; i <= m; ++i)
for (int j = 1; j <= n; ++j)
if (!vis[i][j]) dfs(i, j), ++cnt;
return cnt;
}
}
namespace subtask2 {
bool vis[4][N];
int prf[4][N];
void init() {
vis[1][0] = vis[2][0] = vis[sr][sc] = true;
for (char c : s) {
sr += dr[num[c]];
sc += dc[num[c]];
vis[sr][sc] = true;
}
for (int i = 1; i <= c; ++i) {
prf[1][i] = prf[1][i - 1] + (vis[1][i - 1] && !vis[1][i]);
prf[2][i] = prf[2][i - 1] + (vis[2][i - 1] && !vis[2][i]);
prf[3][i] = prf[3][i - 1] + (vis[1][i - 1] && vis[2][i - 1] && (!vis[1][i] || !vis[2][i]));
}
}
int solve(int ar, int ac, int br, int bc) {
if (ar == br) {
return prf[ar][bc] - prf[ar][ac - 1] + (!vis[ar][ac - 1] && !vis[ar][ac]);
}
else {
return prf[3][bc] - prf[3][ac - 1] + ((!vis[1][ac - 1] || !vis[2][ac - 1]) && (!vis[1][ac] || !vis[2][ac]));
}
}
}
void init(int R, int C, int SR, int SC, int M, char *S) {
num['E'] = 0, num['W'] = 1, num['S'] = 2, num['N'] = 3;
r = R, c = C, sr = SR, sc = SC, m = M;
for (int i = 0; i < m; ++i) s.push_back(S[i]);
if (r <= 50 && c <= 50)
subtask1::init();
else if (r == 2)
subtask2::init();
}
int colour(int ar, int ac, int br, int bc) {
if (r <= 50 && c <= 50)
return subtask1::solve(ar, ac, br, bc);
else if (r == 2)
return subtask2::solve(ar, ac, br, bc);
return 0;
}
/** /\_/\
* (= ._.)
* / >0 \>1
**/
