/* -*- coding: utf-8 -*-
 *
 * 1535.cc:  No.1535 五七五 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 500000;

/* typedef */

/* global variables */

int lss[MAX_N + 1];

/* subroutines */

/* main */

int main() {
  int n, a, b, c;
  scanf("%d%d%d%d", &n, &a, &b, &c);

  for (int i = 0; i < n; i++) {
    char s[16];
    scanf("%s", s);

    int l = strlen(s);
    lss[i + 1] = lss[i] + l;
  }

  int cnt = 0;
  for (int i = 0; i < n; i++) {
    int x = lss[i];
    int ka = lower_bound(lss, lss + n + 1, x + a) - lss;
    int kb = lower_bound(lss, lss + n + 1, x + a + b) - lss;
    int kc = lower_bound(lss, lss + n + 1, x + a + b + c) - lss;

    if (ka <= n && lss[ka] == x + a &&
	kb <= n && lss[kb] == x + a + b &&
	kc <= n && lss[kc] == x + a + b + c)
      cnt++;
  }

  printf("%d\n", cnt);
  return 0;
}