Untitled

void Mesh_JOO() {
    long long n;
    cin >> n;
    if (n >= 0) {
        cout << n << "\n";
        return;
    }
    string s = to_string(n);
    if (s.size() == 1) {
        cout << 0 << "\n";
        return;
    }
    char ch = s.back();
    s.pop_back();
    string f = s;
    f.pop_back();
    f += ch;
    long long x = stoi(f), y = stoi(s);
    cout << max(x, y) << "\n";
}


//-----------------------------------------------


void Mesh_JOO() {
    char last = 'a';
    string s;
    cin >> s;
    int res = 0;
    for (int i = 0; i < s.size(); ++i) {
        if (s[i] > last) {
            res += min(s[i] - last, 'z' - s[i] + last - 'a' + 1);
        } else {
            res += min(last - s[i], 'z' - last + s[i] - 'a' + 1);
        }
        last = s[i];
    }
    cout << res;
}