function Main(input) {
    const S = input.trim();
    let rslt = true;
    const set = new Set(["_", "-"]);
    if (set.has(S.at(0)) || set.has(S.at(-1))) rslt = false;
    const OK = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    for (const i of OK) set.add(i);
    for (let i = 1; i < S.length - 1; i++) {
        if (!set.has(S[i])) rslt = false;
    }
    console.log(rslt ? 200 : 400);
}
Main(require("fs").readFileSync(0)+"");