#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 1000000007;
// constexpr int MOD = 998244353;
constexpr int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1};
constexpr int dy8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dx8[] = {0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

int main() {
  int n, a, b, c; cin >> n >> a >> b >> c;
  vector<int> len(n);
  REP(i, n) {
    string s; cin >> s;
    len[i] = s.length();
  }
  FOR(i, 1, n) len[i] += len[i - 1];
  int ans = 0;
  REP(i, n) {
    int target = a + (i > 0 ? len[i - 1] : 0);
    auto it = lower_bound(len.begin() + i, len.end(), target);
    if (it == len.end() || *it != target) continue;
    target += b;
    it = lower_bound(next(it), len.end(), target);
    if (it == len.end() || *it != target) continue;
    target += c;
    it = lower_bound(next(it), len.end(), target);
    if (it == len.end() || *it != target) continue;
    ++ans;
  }
  cout << ans << '\n';
  return 0;
}