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

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n;
  cin >> n;
  vector<int> a(n), b(n);
  for (auto&& e : a) cin >> e;
  for (auto&& e : b) cin >> e;

  vector<pair<int, char>> ans;

  for (int i = 0; i < n; ++i) {
    if (b[i] < a[i]) {
      for (int _ = a[i] - b[i]; _--;) {
        ans.emplace_back(i, 'L');
      }
    }
  }

  for (int i = n; i--;) {
    if (a[i] < b[i]) {
      for (int _ = b[i] - a[i]; _--;) {
        ans.emplace_back(i, 'R');
      }
    }
  }

  cout << size(ans) << '\n';
  for (auto&& [i, c] : ans) {
    cout << i + 1 << ' ' << c << '\n';
  }
}