#include #include using namespace std; int main(void) { int n, elev=0, v=0; cin >> n; char path[n]; cin >> path; for(int i = 0;i < n;i++){ if (path[i]=='D') {elev--;} else { if (path[i]=='U') { elev++; if (elev==0) {v++;} } } } cout << v << endl; return 0; }