#include "bits/stdc++.h"

using namespace std;
using lint = int64_t;

using pii = pair<int, int>;
pii next_pos(int x, int y, char c){
    if(c == 'L') return {x-1, y};
    if(c == 'R') return {x+1, y};
    if(c == 'U') return {x, y+1};
    return {x, y-1};
}

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n; cin>>n;
    string s; cin>>s;
    set<pii> ans;
    for(int m = 0; m < (1<<n); m++){
        set<pii> blocked, visited;
        visited.insert({0,0});
        int x = 0, y = 0;
        bool ok = true;
        for(int i = 0; i<n; i++){
            pii go = next_pos(x, y, s[i]);
            if((m>>i) & 1){
                blocked.insert(go);
                continue;
            }
            visited.insert(go);
            tie(x, y) = go;
        }
        for(auto [px, py] : visited)
            if(blocked.count({px, py}))
                ok = false;
        if(ok){
            ans.insert({x, y});
        
        }
    }
    cout<<ans.size()<<"\n";
    for(auto [x, y]: ans) cout<<x<<" "<<y<<"\n";
    
    return 0;
}




/*
LRUD
0000
0 0
-1 0
0 0
0 1
0 0
0001
0 0
1 0
1 1
1 0
0010
0 0
-1 0
-1 1
-1 0
0011
0 0
0 1
0 0
0100
0 0
-1 0
0 0
0 -1
0101
0 0
1 0
1 -1
0110
0 0
-1 0
-1 -1
0111
0 0
0 -1
1000
0 0
-1 0
0 0
0 1
1001
0 0
1 0
1 1
1010
0 0
-1 0
-1 1
1011
0 0
0 1
1100
0 0
-1 0
0 0
1101
0 0
1 0
1110
0 0
-1 0
1111
0 0
9
-1 -1
-1 0
-1 1
0 -1
0 0
0 1
1 -1
1 0
1 1


*/