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#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;

void citire(char* str, size_t size)
{
    ifstream infile("date.in");

    infile.get(str, size);
}

int CountValidWords(char* str)
{
    int wordCount = 0;
    for(int i = 0; i < strlen(str); i++)
    {
        int start = 0, end = 0;

        if(str[i] != ' ' && str[i] != '_')
        {
            start = i;
            while(str[i] != ' ' && str[i] != '_' && i < strlen(str))
            {
                end = i++;
            }

            if(end - start + 1 >= 7)
            {
                char* aux;
                strncpy(aux, str + start, end - start + 1);
                if(strchr(aux, 'u') != NULL)
                {
                    wordCount++;
                }
            }
        }

    }
    return wordCount;
}

int main()
{
    char str[500];

    citire(str, 500);

    cout << CountValidWords(str);

    return 0;
}