#include <fstream>
#include <cstring>
using namespace std;
ifstream fin("text.in");
ofstream fout("text.out");
int i,cuv,lit;
char s[1100000];
int main()
{
    fin.getline(s, 1100000);
    //transform toate literele mici in litere mari
    for(i=0;s[i]!=0;i++)
    {
        if(s[i]>='a'&&s[i]<='z')
        {
            s[i]-=32;
        }
    }
    for(i=0;s[i]!=0;i++)
    {
        if(s[i]>='A'&&s[i]<='Z')
        {
            lit++;
        }
    }
    for(i=1;s[i]!=0;i++)
    {
        if(s[i]>='A'&&s[i]<='Z'&&(s[i-1]<'A'||s[i-1]>'Z'))
        {
            cuv++;
        }
    }
    if(s[0]>='A'&&s[0]<='Z')
    {
        cuv++;
    }
    fout<<lit/cuv;
    return 0;
}