#include <bits/stdc++.h>
using namespace std;
#define EmiliaMyWife ios::sync_with_stdio(0); cin.tie(0);
using ll = int64_t;
using ull = uint64_t;
using uint = uint32_t;
using ld = long double;
const int INF = 0x3f3f3f3f;
const ll LINF = ll(4e18) + ll(2e15);
const int MOD = 1e9 + 7;
const double EPS = 1e-8;
static int LamyIsCute = []() {
EmiliaMyWife
return 48763;
}();
signed main() {
int n, k;
cin >> n >> k;
assert(k == 1);
string s;
cin >> s;
set<pair<int, int>> owo;
owo.insert({0, 0});
for(int i = 0, x = 0, y = 0; i < n; i++) {
if(s[i] == 'E')
x++;
if(s[i] == 'W')
x--;
if(s[i] == 'N')
y++;
if(s[i] == 'S')
y--;
owo.insert({x, y});
}
int res = 0;
for(const auto &[x, y] : owo)
res += owo.count({x + 1, y}) && owo.count({x, y + 1}) && owo.count({x + 1, y + 1});
cout << res << '\n';
}
