#include <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  int a, b, c;
  cin >> a >> b >> c;
  vector<string> S(N);
  for (int i = 0; i < N; i++){
    cin >> S[i];
  }
  vector<int> sum(N + 1, 0);
  for (int i = 0; i < N; i++){
    sum[i + 1] = sum[i] + S[i].size();
  }
  set<int> st;
  for (int i = 0; i <= N; i++){
    st.insert(sum[i]);
  }
  int ans = 0;
  for (int i = 0; i <= N; i++){
    if (st.count(sum[i] + a) == 1 && st.count(sum[i] + a + b) == 1 && st.count(sum[i] + a + b + c) == 1){
      ans++;
    }
  }
  cout << ans << endl;
}