#include <bits/stdc++.h>
using namespace std;

static bool allowed(unsigned char c) {
    if (isalnum(c)) return true;
    return c == '_' || c == '-';
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    string s;
    if (!(cin >> s)) return 0;

    if (s.size() < 1 || s.size() > 32) {
        cout << "400\n";
        return 0;
    }
    for (unsigned char c : s) {
        if (!allowed(c)) {
            cout << "400\n";
            return 0;
        }
    }
    if (s.front() == '_' || s.front() == '-' || s.back() == '_' || s.back() == '-') {
        cout << "400\n";
        return 0;
    }
    cout << "200\n";
    return 0;
}