#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 */ char l; int no,opt; long int t; cin>>no; t=0; opt=0; for(int i=0;i<no;i++) { cin>>l; if(t==0 && l=='D') { opt+=1; } if(l=='U') { t+=1; } else if(l=='D') { t-=1; } } cout<<opt; return 0; }