#include <bits/stdc++.h>

using namespace std;

int main()
{
    ifstream file("input.txt");
    string str;
    int low, high, validPasswords = 0;
    while (getline(file, str))
    {
        char c = str[str.find(':') - 1];
        size_t found;
        if ((found = str.find("-")) != string::npos)
        {
            low = stoi(str.substr(0, found));
            high = stoi(str.substr(found + 1, string::npos));
            //cout << low << " " << high << endl;

            int cnt = 0;
            for (int i = 0; i <= str.size(); i++)
            {
                if (str[i] == c)
                {
                    cnt++;
                }
            }
            if ((cnt >= low) && (cnt <= high))
            {
                validPasswords++;
            }
        }
    }
    cout << validPasswords << "\n";
}