#include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> #include <bits/stdc++.h> using namespace std; int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */ int n; cin>>n; char arr[n]; cin>>arr; int len = strlen(arr); int count = 0; int sum =0; for(int i =0;i<len;i++){ //cout<<sum<<" "; if(arr[i] == 'U'){ sum = sum +1; if(sum ==0) count++; } else sum = sum - 1; } cout<<count<<endl; return 0; }