#include <bits/stdc++.h>
using namespace std;
auto main() -> int {
  int N, X, Y;
  cin >> N;
  vector<int> C(N);
  for (int i = 0; i < N; i++) cin >> C[i];
  cin >> X >> Y;
  int l = 0;
  int ret = 0;
  for (int i = 0; i < N; i++) {
    if (l < X) {
      if (l + C[i] <= Y)
        l += C[i];
      else
        break;
    } else if (l >= X && l <= Y) {
      int t = 0;
      for (int j = i; j < N; j++) t += C[j];
      if (t >= X && t <= Y) {
        ret = i + 1;
        break;
      } else {
        l += C[i];
      }
    }
  }
  cout << ret << endl;
  return 0;
}
