#include <iostream>
#include <string>
using namespace std;

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

    // 1. Length check
    if (S.length() < 1 || S.length() > 32) {
        cout << 400 << endl;
        return 0;
    }

    // 2. First and last character check
    if (S.front() == '_' || S.front() == '-' ||
        S.back() == '_' || S.back() == '-') {
        cout << 400 << endl;
        return 0;
    }

    // 3. Character validation
    for (char c : S) {
        if (!( (c >= 'A' && c <= 'Z') ||
               (c >= 'a' && c <= 'z') ||
               (c >= '0' && c <= '9') ||
               c == '_' || c == '-' )) {
            cout << 400 << endl;
            return 0;
        }
    }

    // If all checks passed
    cout << 200 << endl;
    return 0;
}