/* Problem URL: https://cses.fi/problemset/task/1625 */

#include <bits/stdc++.h>

using namespace std;

#define V vector

#define rmin(a, b) a = min(a, b)
#define rmax(a, b) a = max(a, b)

#define rep(i, lim) for (int i = 0; i < (lim); i++)
#define nrep(i, s, lim) for (int i = s; i < (lim); i++)

#define repv(i, v) for (auto &i : (v))
#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
#define sortv(v) sort(v.begin(), v.end())
#define all(v) (v).begin(), (v).end()

using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vvvvi = vector<vvvi>;

using ll = long long;

using vl = vector<ll>;
using vvl = vector<vl>;
using vvvl = vector<vvl>;
using vvvvl = vector<vvvl>;

template<class v>
auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
    os << vec[0];
    for (size_t i = 1; i < vec.size(); i++) {
        os << ' ' << vec[i];
    }
    os << '\n';
    return os;
}

template<class v>
auto operator>>(istream &is, vector<v> &vec)->istream& {
    for (auto &i : vec) {
        is >> i;
    }
    return is;
}

template<class v>
auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
    for (auto &i : vec) {
        os << i[0];
        for (size_t j = 1; j < i.size(); j++) {
            os << ' ' << i[j];
        }
        os << '\n';
    }
    return os;
}

template<class v>
auto operator>>(istream  &is, vector<vector<v>> &vec)->istream& {
    for (auto &i : vec) {
        for (auto &j : i) {
            is >> j;
        }
    }
    return is;
}

char a[49];
bool frame[7][7];

int func(int i, int j, int pos)
{
    if (pos >= 48) {
        return (i == 6 && j == 0);
    }

    if (i == 6 && j == 0) {
        return 0;
    }

    if ((i == 0 || frame[i - 1][j]) && (i == 6 || frame[i + 1][j]) && (j != 0 && !frame[i][j - 1]) && (j != 6 && !frame[i][j + 1])) {
        return 0;
    }

    if ((j == 0 || frame[i][j - 1]) && (j == 6 || frame[i][j + 1]) && (i != 0 && !frame[i - 1][j]) && (i != 6 && !frame[i + 1][j])) {
        return 0;
    }

    frame[i][j] = true;

    if (a[pos] == '?') {
        int add[][4] = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}};
        int ans = 0;

        repv(k, add) {
            int id = i + k[0];
            int jd = j + k[1];
            
            if (id >= 0 && id < 7 && jd >= 0 && jd < 7 && !frame[id][jd]) {
                ans += func(id, jd, pos + 1);
            }
        }

        frame[i][j] = false;
        return ans;
    }

    int id = i;
    int jd = j;
    switch (a[pos]) {
    case 'U':
        id--;
        break;
    case 'D':
        id++;
        break;
    case 'L':
        jd--;
        break;
    case 'R':
        jd++;
    }

    int ans = 0;
    if (id >= 0 && id < 7 && jd >= 0 && jd < 7 && !frame[id][jd]) {
        ans = func(id, jd, pos + 1);
    }

    frame[i][j] = false;
    return ans;
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    scanf("%s", a);

    printf("%d\n", func(0, 0, 0));
}