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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    string s;
    cin >> s;
    set<pair<int, int>> st;
    for (int mask = 0; mask < (1 << n); mask++) {
        set<pair<int, int>> ng;
        int x = 0, y = 0;
        for (int i = 0; i < n; i++) {
            if (mask & (1 << i)) {
                if (s[i] == 'U') {
                    ng.emplace(x, y + 1);
                } else if (s[i] == 'D') {
                    ng.emplace(x, y - 1);
                } else if (s[i] == 'L') {
                    ng.emplace(x - 1, y);
                } else {
                    ng.emplace(x + 1, y);
                }
            } else {
                if (s[i] == 'U') {
                    y++;
                } else if (s[i] == 'D') {
                    y--;
                } else if (s[i] == 'L') {
                    x--;
                } else {
                    x++;
                }
            }
        }
        if (ng.count(make_pair(0, 0))) {
            continue;
        }
        x = 0, y = 0;
        for (int i = 0; i < n; i++) {
            int nx = x, ny = y;
            if (s[i] == 'U') {
                ny++;
            } else if (s[i] == 'D') {
                ny--;
            } else if (s[i] == 'L') {
                nx--;
            } else {
                nx++;
            }
            if (ng.count(make_pair(nx, ny))) {
                continue;
            }
            x = nx;
            y = ny;
        }
        st.emplace(x, y);
    }
    cout << st.size() << '\n';
    for (auto [x, y] : st) {
        cout << x << " " << y << '\n';
    }
    return 0;
}