#include <iostream>
#include <string>

using namespace std;

int main() {
    string s;
    cin >> s;

    int height = 10; 

    for (int i = 1; i < s.length(); i++) {
        if (s[i] == s[i - 1]) {
            height += 5; 
        } else {
            height += 10; 
        }
    }

    cout << height << "\n";

    return 0;
}