#include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> using namespace std; int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */ int n; cin>>n; string str; cin>>str; int height=0,cunt=0; int len=(int)str.size(); for(int i=0;i<len;++i){ if(str[i]=='D'){ height--; } else{ height++; } if(height==0){ if(str[i]=='U') ++cunt; } } cout<<cunt<<"\n"; return 0; }