#include using namespace std; using ll = long long; template struct prime_modint { using mint = prime_modint; unsigned int v; prime_modint() : v(0) {} prime_modint(unsigned int a) { a %= MOD; v = a; } prime_modint(unsigned long long a) { a %= MOD; v = a; } prime_modint(int a) { a %= (int)(MOD); if(a < 0)a += MOD; v = a; } prime_modint(long long a) { a %= (int)(MOD); if(a < 0)a += MOD; v = a; } static constexpr int mod() { return MOD; } mint& operator++() {v++; if(v == MOD)v = 0; return *this;} mint& operator--() {if(v == 0)v = MOD; v--; return *this;} mint operator++(int) { mint result = *this; ++*this; return result; } mint operator--(int) { mint result = *this; --*this; return result; } mint& operator+=(const mint& rhs) { v += rhs.v; if(v >= MOD) v -= MOD; return *this; } mint& operator-=(const mint& rhs) { if(v < rhs.v) v += MOD; v -= rhs.v; return *this; } mint& operator*=(const mint& rhs) { v = (unsigned int)((unsigned long long)(v) * rhs.v % MOD); return *this; } mint& operator/=(const mint& rhs) { return *this = *this * rhs.inv(); } mint operator+() const { return *this; } mint operator-() const { return mint() - *this; } mint pow(long long n) const { assert(0 <= n); mint r = 1, x = *this; while (n) { if (n & 1) r *= x; x *= x; n >>= 1; } return r; } mint inv() const { assert(v); return pow(MOD - 2); } friend mint operator+(const mint& lhs, const mint& rhs) { return mint(lhs) += rhs; } friend mint operator-(const mint& lhs, const mint& rhs) { return mint(lhs) -= rhs; } friend mint operator*(const mint& lhs, const mint& rhs) { return mint(lhs) *= rhs; } friend mint operator/(const mint& lhs, const mint& rhs) { return mint(lhs) /= rhs; } friend bool operator==(const mint& lhs, const mint& rhs) { return (lhs.v == rhs.v); } friend bool operator!=(const mint& lhs, const mint& rhs) { return (lhs.v != rhs.v); } friend std::ostream& operator << (std::ostream &os, const mint& rhs) noexcept { return os << rhs.v; } }; //using mint = prime_modint<1000000007>; using mint = prime_modint<998244353>; int main(){ ios::sync_with_stdio(false); cin.tie(0); int l, k; cin >> l >> k; string s, t; cin >> s >> t; vector a(26); for(auto &&v : a) cin >> v; int tot = accumulate(a.begin(), a.end(), 0); vector coef(26); for(int i = 0; i < 26; i++){ coef[i] = mint(a[i]) / tot; } mint A, B; vector dp(1, vector(1)); dp[0][0] = 1; for(int i = 0; i < k; i++){ vector ndp(i + 2, vector(i + 2)); for(int j = 0; j <= i; j++){ int ns = s[j % l] - 'a'; for(int p = max(0, j - l + 1); p <= i && p < j + l; p++){ if(dp[j][p] == 0) continue; int nt = t[p % l] - 'a'; for(int n = 0; n < 26; n++){ if(coef[n] == 0) continue; int nj = j, np = p; if (n == ns) nj++; if (n == nt) np++; if(nj - np >= l){ A += coef[n] * dp[j][p]; continue; } if(np - nj >= l){ B += coef[n] * dp[j][p]; continue; } ndp[nj][np] += coef[n] * dp[j][p]; } } } swap(dp, ndp); } cout << A << ' ' << B << '\n'; }