#include <bits/stdc++.h> using namespace std; int main() { char s[2000]; int t,f,a,c; while(gets(s)) { c=0; for(t=0;s[t]!='\0';t++) { if( ((s[t]>='A' && s[t]<='Z') || (s[t]>='a' && s[t]<='z'))&&(s[t+1]<'a'||s[t+1]>'z') && (s[t+1]<'A'||s[t+1]>'Z')) c++; } cout<<c<<endl; } return 0; }