#include <bits/stdc++.h>   using namespace std;   const double pi = acos(-1);   const long long N = 1e5 + 5, M = 1e9 + 7;   char ulta[500];   set<char> ache;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     ulta[ U ] =  D ;     ulta[ D ] =  U ;     ulta[ R ] =  L ;     ulta[ L ] =  R ;     string s;     long long n, i, j, k, ans = 2;     cin >> n >> s;     for (auto ch : s) {       auto x = ache.find(ulta[ch]);       if (x != ache.end()) {         ans++;         ache.clear();       }       ache.insert(ch);     }     cout << ans - 1 << endl;   }   