#include<bits/stdc++.h> using namespace std; using ll = long long; #define all(a) (a).begin(), (a).end() #define pb push_back #define fi first #define se second mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count()); const ll MOD1000000007 = 1000000007; const ll MOD998244353 = 998244353; const ll MOD[3] = {999727999, 1070777777, 1000000007}; const ll LINF = 1LL << 60LL; const int IINF = (1 << 30) - 2; void solve(){ int n; cin >> n; string s; cin >> s; int ans = 1; for(int i=0; i<n-1; i++) if(s[i]!=s[i+1]) ans++; cout << ans << '\n'; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); int T=1; //cin >> T; while(T--) solve(); }