#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2")
// #define ATC
#define LL long long
#define eb emplace_back
#define FIO(FILENAME) freopen(FILENAME".in", "r", stdin), freopen(FILENAME".out", "w", stdout)
using namespace std;

#ifdef ATC
#include <atcoder/all>
using namespace atcoder;
#endif

#define OPENIOBUF

namespace FastIO {
    class FastIOBase {
    protected:
#ifdef OPENIOBUF
        static const int BUFSIZE = 1 << 22;
        char buf[BUFSIZE + 1];
        int buf_p = 0;
#endif
        FILE *target;

    public:
#ifdef OPENIOBUF
        virtual void flush() = 0;
#endif
        FastIOBase(FILE *f) : target(f) {}
        ~FastIOBase() = default;
    };

    class FastOutput : public FastIOBase {
#ifdef OPENIOBUF
    public:
        inline void flush() { fwrite(buf, 1, buf_p, target), buf_p = 0; }
#endif
    protected:
        inline void __putc(char x) {
#ifdef OPENIOBUF
            if (buf[buf_p++] = x, buf_p == BUFSIZE)
                flush();
#else
            putc(x, target);
#endif
        }
        template <typename T>
        inline void __write(T x) {
            static char stk[64], *top;
            top = stk;
            if (x < 0)
                return __putc('-'), __write(-x);
            do *(top++) = x % 10, x /= 10;
            while (x);
            for (; top != stk; __putc(*(--top) + '0'));
        }

    public:
        FastOutput(FILE *f = stdout) : FastIOBase(f) {}
#ifdef OPENIOBUF
        inline void setTarget(FILE *f) { this->flush(), target = f; }
        ~FastOutput() { flush(); }
#else
        inline void setTarget(FILE *f) { target = f; }
#endif
        template <typename... T>
        inline void writesp(const T &...x) { initializer_list<int>{(this->operator<<(x), __putc(' '), 0)...}; }
        template <typename... T>
        inline void writeln(const T &...x) { initializer_list<int>{(this->operator<<(x), __putc('\n'), 0)...}; }
        inline FastOutput &operator<<(char x) { return __putc(x), *this; }
        inline FastOutput &operator<<(const char *s) {
            for (; *s; __putc(*(s++)));
            return *this;
        }
        inline FastOutput &operator<<(const string &s) { return (*this) << s.c_str(); }
        template <typename T, typename = typename enable_if<is_integral<T>::value>::type>
        inline FastOutput &operator<<(const T &x) { return __write(x), *this; }
    };
    FastOutput qout = FastOutput(stdout);
    FastOutput qerr = FastOutput(stderr); 

    class FastInput : public FastIOBase {
#ifdef OPENIOBUF
    public:
        inline void flush() { buf[fread(buf, 1, BUFSIZE, target)] = '\0', buf_p = 0; }
#endif
    protected:
        inline char __getc() {
#ifdef OPENIOBUF
            if (buf_p == BUFSIZE)
                flush();
            return buf[buf_p++];
#else
            return getc(target);
#endif
        }
    public:
#ifdef OPENIOBUF
        FastInput(FILE *f = stdin) : FastIOBase(f) { buf_p = BUFSIZE; }
        inline void setTarget(FILE *f) { this->flush(), target = f; }
#else
        FastInput(FILE *f = stdin) : FastIOBase(f) {}
        inline void setTarget(FILE *f) { target = f; }
#endif
        inline char getchar() { return __getc(); }
        template <typename... T>
        inline void read(T &...x) { initializer_list<int>{(this->operator>>(x), 0)...}; }
        inline FastInput &operator>>(char &x) {
            while (isspace(x = __getc()));
            return *this;
        }
        template <typename T, typename = typename enable_if<is_integral<T>::value>::type>
        inline FastInput &operator>>(T &x) {
            static char ch, sym;
            x = sym = 0;
            while (isspace(ch = __getc()));
            if (ch == '-') sym = 1, ch = __getc();
            for (; isdigit(ch); x = (x << 1) + (x << 3) + (ch ^ 48), ch = __getc());
            return sym ? x = -x : x, *this;
        }
        inline FastInput &operator>>(char *s) {
            while (isspace(*s = __getc()));
            for (; !isspace(*s) && *s && ~*s; *(++s) = __getc());
            return *s = '\0', *this;
        }
        inline FastInput &operator>>(string &s) {
            char str_buf[(1 << 8) + 1], *p = str_buf;
            char *const buf_end = str_buf + (1 << 8);
            while (isspace(*p = __getc()));
            for (s.clear(), p++;; p = str_buf) {
                for (; p != buf_end && !isspace(*p = __getc()) && *p && ~*p; p++);
                *p = '\0', s.append(str_buf);
                if (p != buf_end) break;
            }
            return *this;
        }
    } qin;
}
using namespace FastIO;

const int N = 20, M = (1 << 18) + 9, mod = 998244353;
int n, st[M], f[M], g[M], h[M], mp[M];
LL r[N];
char ss[M];

template<typename T>
inline T fix (T x) { x %= mod; return x < 0 ? x + mod : x; }
template<typename T, typename _T>
inline void inc (T &x, const _T &y) { x += y; x >= mod && (x -= mod); }
template<typename T, typename _T>
inline void dec (T &x, const _T &y) { x -= y; x < 0 && (x += mod); }

inline void FWT (auto A, int o) {
    for (int i = 1, t = 0; i < (1 << n); i <<= 1, ++t) 
        for (int j = 0, p = i << 1; j < (1 << n); j += p) 
            for (int k = j; k < j + i; k++) 
                (r[t] >> o & 1) ? inc(A[k], A[k + i]) : inc(A[k + i], A[k]);
}

inline void iFWT (auto A, int o) {
    for (int i = 1, t = 0; i < (1 << n); i <<= 1, ++t) 
        for (int j = 0, p = i << 1; j < (1 << n); j += p) 
            for (int k = j; k < j + i; k++) 
                (r[t] >> o & 1) ? dec(A[k], A[k + i]) : dec(A[k + i], A[k]);
}

int main() {
    // FIO("1");
    qin >> n;
    for (int i = 0; i < n; i++) qin >> r[i];
    qin >> ss;
    for (int i = 0; i < (1 << n); i++) st[i] = ss[i] == '1';
    h[0] = 1;
    for (int i = 0; i < 60; i++) {
        for (int j = 0; j < (1 << n); j++) f[j] = h[j], g[j] = st[j];
        FWT(f, i), FWT(g, i);
        for (int j = 0; j < (1 << n); j++) f[j] = (LL)f[j] * g[j] % mod;
        iFWT(f, i);
        for (int j = 0; j < (1 << n); j++) h[j] = f[j];
    }
    qout << h[0];
    // cerr << 1. * clock() / CLOCKS_PER_SEC;
}
// I love WHQ!