You are given a string S and an array of strings [t_1, t_2, ..., t_k]. Each string t_i consists of lowercase Latin letters from a to n; S consists of lowercase Latin letters from a to n and no more than 14 question marks.

Each string t_i has its cost c_i — an integer number. The value of some string T is calculated as ∑_{i = 1}^{k} F(T, t_i) ⋅ c_i, where F(T, t_i) is the number of occurences of string t_i in T as a substring. For example, F(aaabaaa, aa) = 4.

You have to replace all question marks in S with pairwise distinct lowercase Latin letters from a to n so the value of S is maximum possible.

Input

The first line contains one integer k (1 ≤ k ≤ 1000) — the number of strings in the array [t_1, t_2, ..., t_k].

Then k lines follow, each containing one string t_i (consisting of lowercase Latin letters from a to n) and one integer c_i (1 ≤ |t_i| ≤ 1000, -10^6 ≤ c_i ≤ 10^6). The sum of lengths of all strings t_i does not exceed 1000.

The last line contains one string S (1 ≤ |S| ≤ 4 ⋅ 10^5) consisting of lowercase Latin letters from a to n and question marks. The number of question marks in S is not greater than 14.

Output

Print one integer — the maximum value of S after replacing all question marks with pairwise distinct lowercase Latin letters from a to n.

Examples

Input


4
abc -10
a 1
b 1
c 3
?b?


Output


5


Input


2
a 1
a 1
?


Output


2


Input


3
a 1
b 3
ab 4
ab


Output


8


Input


1
a -1
?????????????


Output


0


Input


1
a -1
??????????????


Output


-1
#include <bits/stdc++.h>
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
const int inf = 0x3f3f3f3f, Inf = 0x7fffffff;
const long long INF = 0x7fffffffffffffff;
const double eps = 1e-10;
template <typename _Tp>
_Tp gcd(const _Tp &a, const _Tp &b) {
  return (!b) ? a : gcd(b, a % b);
}
template <typename _Tp>
__inline__ __attribute__((always_inline)) _Tp abs(const _Tp &a) {
  return a >= 0 ? a : -a;
}
template <typename _Tp>
__inline__ __attribute__((always_inline)) _Tp max(const _Tp &a, const _Tp &b) {
  return a < b ? b : a;
}
template <typename _Tp>
__inline__ __attribute__((always_inline)) _Tp min(const _Tp &a, const _Tp &b) {
  return a < b ? a : b;
}
template <typename _Tp>
__inline__ __attribute__((always_inline)) void chmax(_Tp &a, const _Tp &b) {
  (a < b) && (a = b);
}
template <typename _Tp>
__inline__ __attribute__((always_inline)) void chmin(_Tp &a, const _Tp &b) {
  (b < a) && (a = b);
}
template <typename _Tp>
__inline__ __attribute__((always_inline)) bool _cmp(const _Tp &a,
                                                    const _Tp &b) {
  return abs(a - b) <= eps;
}
template <typename _Tp>
__inline__ __attribute__((always_inline)) void read(_Tp &x) {
  register char ch(getchar());
  bool f(false);
  while (ch < 48 || ch > 57) f |= ch == 45, ch = getchar();
  x = ch & 15, ch = getchar();
  while (ch >= 48 && ch <= 57)
    x = (((x << 2) + x) << 1) + (ch & 15), ch = getchar();
  if (f) x = -x;
}
template <typename _Tp, typename... Args>
__inline__ __attribute__((always_inline)) void read(_Tp &t, Args &...args) {
  read(t);
  read(args...);
}
__inline__ __attribute__((always_inline)) int read_str(char *s) {
  register char ch(getchar());
  while (ch == ' ' || ch == '\r' || ch == '\n') ch = getchar();
  register char *tar = s;
  *tar = ch, ch = getchar();
  while (ch != ' ' && ch != '\r' && ch != '\n' && ch != EOF)
    *(++tar) = ch, ch = getchar();
  return tar - s + 1;
}
const int N = 1005;
std::vector<int> v[1 << 14];
struct ACAM {
  int ch[N][14];
  int fail[N];
  long long val[N], c[N];
  int node_cnt;
  int _q[N], _l, _r;
  void insert(char *s, int len, int qwq) {
    int tmp, cur = 0;
    for (int i = 1; i <= len; ++i) {
      tmp = s[i] - 97;
      if (!ch[cur][tmp]) ch[cur][tmp] = ++node_cnt;
      cur = ch[cur][tmp];
    }
    c[cur] += qwq;
  }
  void build() {
    _l = 1, _r = 0;
    for (int i = 0; i < 14; ++i) {
      if (ch[0][i]) {
        _q[++_r] = ch[0][i];
      }
    }
    while (_l != _r + 1) {
      int x = _q[_l++];
      for (int i = 0; i < 14; ++i) {
        if (ch[x][i]) {
          fail[ch[x][i]] = ch[fail[x]][i];
          _q[++_r] = ch[x][i];
        } else {
          ch[x][i] = ch[fail[x]][i];
        }
      }
    }
    for (int i = 1; i <= node_cnt; ++i) {
      for (int cur = i; cur; cur = fail[cur]) {
        val[i] += c[cur];
      }
    }
  }
  std::pair<int, long long> walk(int cur, char *s, int k) {
    long long ans = 0;
    for (register int i = 0; i < k; ++i) {
      cur = ch[cur][s[i] - 97];
      ans += val[cur];
    }
    return std::make_pair(cur, ans);
  }
  long long f[1005][1 << 14], g[1005][1 << 14];
  long long dp(char *s, int len) {
    memset(f, -63, sizeof(f));
    memset(g, -63, sizeof(g));
    int pos = 0;
    while (pos < len && s[pos + 1] != '?') ++pos;
    std::pair<int, long long> tmp = walk(0, s + 1, pos);
    g[tmp.first][0] = tmp.second;
    for (int i = pos + 1; i <= len; ++i) {
      memset(f, -63, sizeof(f));
      for (register int j = 0; j <= node_cnt; ++j) {
        for (register int st = 0; st < 1 << 14; ++st) {
          if (g[j][st] <= -1e15) continue;
          for (int k : v[st]) {
            chmax(f[ch[j][k]][st | (1 << k)], g[j][st] + val[ch[j][k]]);
          }
        }
      }
      memset(g, -63, sizeof(g));
      pos = i;
      while (pos < len && s[pos + 1] != '?') ++pos;
      for (int j = 0; j <= node_cnt; ++j) {
        tmp = walk(j, s + i + 1, pos - i);
        for (register int st = 0; st < 1 << 14; ++st) {
          chmax(g[tmp.first][st], f[j][st] + tmp.second);
        }
      }
      i = pos;
    }
    long long ans = -INF;
    for (int i = 0; i <= node_cnt; ++i) {
      for (int st = 0; st < 1 << 14; ++st) {
        chmax(ans, g[i][st]);
      }
    }
    return ans;
  }
} tr;
char s[400005];
int main() {
  for (int i = 0; i < 1 << 14; ++i) {
    for (int j = 0; j < 14; ++j) {
      if (!((i >> j) & 1)) {
        v[i].push_back(j);
      }
    }
  }
  int k;
  read(k);
  int x;
  for (int i = 1; i <= k; ++i) {
    int len = read_str(s + 1);
    read(x);
    tr.insert(s, len, x);
  }
  tr.build();
  int len = read_str(s + 1);
  printf("%lld\n", tr.dp(s, len));
  return 0;
}
