#include <stdio.h>
#include <iostream>
#include <vector>
#include <stack>

using namespace std;

#define P pair<int, char>

int N;
vector<int> A, B;
vector<P> op;

void dfs(int a) {
  if (A[a] >= B[a]) {
    for (int i = 0; i < A[a] - B[a]; i++) {
      op.push_back(make_pair(a, 'L'));
    }

    A[a] = B[a];

    return;
  }

  if (a < N - 1) {
    dfs(a + 1);
  }

  for (int i = 0; i < B[a] - A[a]; i++) {
    op.push_back(make_pair(a, 'R'));
  }

  A[a] = B[a];
}

int main() {
  cin >> N;

  A.resize(N, 0);
  B.resize(N, 0);

  for (int i = 0; i < N; i++) {
    cin >> A[i];
  }

  for (int i = 0; i < N; i++) {
    cin >> B[i];
  }

  for (int i = 0; i < N; i++) {
    dfs(i);
  }

  cout << op.size() << endl;

  for (int i = 0; i < (int)op.size(); i++) {
    cout << (op[i].first + 1) << " " << op[i].second << endl;
  }

  return 0;
}