// Om Namah Shivaya
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x, y) ((x + y - 1) / (y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl
#define rep(i, n) for(int i = 0; i < n; ++i)
#define rep1(i, n) for(int i = 1; i <= n; ++i)
#define rev(i, s, e) for(int i = s; i >= e; --i)
#define trav(i, a) for(auto &i : a)
template<typename T>
void amin(T &a, T b) {
a = min(a, b);
}
template<typename T>
void amax(T &a, T b) {
a = max(a, b);
}
#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif
/*
*/
const int MOD = 1e9 + 7;
const int N = 2e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;
#include "rainbow.h"
struct DSU {
vector<int> par, rankk, siz;
DSU() {
}
DSU(int n) {
init(n);
}
void init(int n) {
par = vector<int>(n + 1);
rankk = vector<int>(n + 1);
siz = vector<int>(n + 1);
rep(i, n + 1) create(i);
}
void create(int u) {
par[u] = u;
rankk[u] = 0;
siz[u] = 1;
}
int find(int u) {
if (u == par[u]) return u;
else return par[u] = find(par[u]);
}
bool same(int u, int v) {
return find(u) == find(v);
}
void merge(int u, int v) {
u = find(u), v = find(v);
if (u == v) return;
if (rankk[u] == rankk[v]) rankk[u]++;
if (rankk[u] < rankk[v]) swap(u, v);
par[v] = u;
siz[u] += siz[v];
}
};
vector<int> here[N];
vector<pii> row_segs[N];
int n,m;
void init(int n_, int m_, int sr, int sc, int k, char *S) {
n = n_;
m = m_;
here[sr].pb(sc);
rep(i,k){
char ch = S[i];
if(ch == 'E'){
sc++;
}
else if(ch == 'W'){
sc--;
}
else if(ch == 'N'){
sr--;
}
else{
sr++;
}
here[sr].pb(sc);
}
rep1(i,n){
auto &v = here[i];
sort(all(v));
v.resize(unique(all(v))-v.begin());
}
}
int colour(int ar, int ac, int br, int bc) {
vector<array<int,3>> prev_segs;
vector<pii> edges;
int ptr = 1;
for(int i = ar; i <= br; ++i){
vector<array<int,3>> curr_segs;
auto add = [&](int l, int r){
if(l <= r){
curr_segs.pb({l,r,ptr++});
}
};
// auto it = lower_bound(all(here[i]),ac);
// if(it == here[i].end() or *it > bc){
// add(ac,bc);
// }
// else{
// add(ac,*it-1);
// int pos = it-here[i].begin();
// int siz = sz(here[i]);
// while(true){
// if(here[i][pos] > bc) break;
// if(pos+1 == siz){
// add(here[i][pos]+1,bc);
// break;
// }
// else{
// add(here[i][pos]+1,min(here[i][pos+1]-1,bc));
// pos++;
// }
// }
// }
int l = -1;
auto &vec = here[i];
for(int j = ac; j <= bc; ++j){
if(binary_search(all(vec),j)){
if(l != -1){
curr_segs.pb({l,j-1,ptr++});
}
l = -1;
}
else{
if(l == -1){
l = j;
}
}
}
if(l != -1){
curr_segs.pb({l,bc,ptr++});
}
for(auto [l1,r1,u] : prev_segs){
for(auto [l2,r2,v] : curr_segs){
if(max(l1,l2) <= min(r1,r2)){
edges.pb({u,v});
}
}
}
// trav(ar,curr_segs){
// debug(ar);
// }
// cout << endl;
prev_segs = curr_segs;
}
ptr--;
// debug(ptr);
// debug(edges);
DSU dsu(ptr+5);
for(auto [u,v] : edges){
dsu.merge(u,v);
}
int ans = 0;
rep1(i,ptr){
if(dsu.find(i) == i){
ans++;
}
}
return ans;
}
