#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pdd = pair<double, double>;
using pll = pair<ll, ll>;
using pli = pair<ll, int>;
using pil = pair<int, ll>;
template <typename T>
using Graph = vector<vector<T>>;
const int MOD = 1e9 + 7;
const ld PI = acos(-1);

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int N, a, b, c;
    cin >> N >> a >> b >> c;
    vector<int> len(N);
    for (int i = 0; i < N; ++i) {
        string S;
        cin >> S;
        len[i] = S.size();
    }

    vector<bool> v(N, true);
    auto func = [&](int k) -> void {
        int r = 0, nlen = 0;
        for (int l = 0; l < N; ++l) {
            while (r < N && nlen < k) {
                nlen += len[r];
                r++;
            }
            if (nlen != k) {
                v[l] = false;
            }
            nlen -= len[l];
        }
    };

    func(a);
    func(a + b);
    func(a + b + c);

    cout << count(v.begin(), v.end(), true) << endl;

    return 0;
}