#include<iostream>#include<cstring>#include<cctype>using namespace std;
int main(){ string n; while(getline(cin, n)){ int count = 0; for(int i = 1; i < n.length(); i++){ if((!isalpha(n[i])) && isalpha(n[i-1])){ count++; } } if(isalpha(n[n.length() - 1])){ count++; } cout << count << "\n";
}}