#pragma GCC optmize("Ofast")
#include <bits/stdc++.h>
using namespace std;
namespace FastIO {
	struct IO {
	    char ibuf[(1 << 20) + 1], *iS, *iT, obuf[(1 << 20) + 1], *oS;
	    IO() : iS(ibuf), iT(ibuf), oS(obuf) {} ~IO() { fwrite(obuf, 1, oS - obuf, stdout); }
		#if ONLINE_JUDGE
		#define gh() (iS == iT ? iT = (iS = ibuf) + fread(ibuf, 1, (1 << 20) + 1, stdin), (iS == iT ? EOF : *iS++) : *iS++)
		#else
		#define gh() getchar()
		#endif
		inline bool eof (const char &ch) { return ch == ' ' || ch == '\n' || ch == '\r' || ch == 't' || ch == EOF; }
	    inline long long read() {
	        char ch = gh();
	        long long x = 0;
	        bool t = 0;
	        while (ch < '0' || ch > '9') t |= ch == '-', ch = gh();
	        while (ch >= '0' && ch <= '9') x = (x << 1) + (x << 3) + (ch ^ 48), ch = gh();
	        return t ? ~(x - 1) : x;
	    }
	    inline void read (char *s) {
	    	char ch = gh(); int l = 0;
	    	while (eof(ch)) ch = gh();
	    	while (!eof(ch)) s[l++] = ch, ch = gh();
	    }
	    inline void read (double &x) {
	    	char ch = gh(); bool t = 0;
	    	while (ch < '0' || ch > '9') t |= ch == '-', ch = gh();
	    	while (ch >= '0' && ch <= '9') x = x * 10 + (ch ^ 48), ch = gh();
	    	if (ch != '.') return t && (x = -x), void(); ch = gh();
	    	for (double cf = 0.1; '0' <= ch && ch <= '9'; ch = gh(), cf *= 0.1) x += cf * (ch ^ 48);
	    	t && (x = -x);
	    }
	    inline void pc (char ch) {
	    	#ifdef ONLINE_JUDGE
	    	if (oS == obuf + (1 << 20) + 1) fwrite(obuf, 1, oS - obuf, stdout), oS = obuf; 
	    	*oS++ = ch;
	    	#else
	    	putchar(ch);
	    	#endif
		}
		template<typename _Tp>
	    inline void write (_Tp x) {
	    	static char stk[64], *tp = stk;
	    	if (x < 0) x = ~(x - 1), pc('-');
			do *tp++ = x % 10, x /= 10;
			while (x);
			while (tp != stk) pc((*--tp) | 48);
	    }
	    inline void write (char *s) {
	    	int n = strlen(s);
	    	for (int i = 0; i < n; i++) pc(s[i]);
	    }
	} io;
	inline long long read () { return io.read(); }
	template<typename Tp>
	inline void read (Tp &x) { io.read(x); }
	template<typename _Tp>
	inline void write (_Tp x) { io.write(x); }
}
using namespace FastIO;
typedef long long ll;
const int maxn=18,mod=998244353;
int n,s,b[(1<<18)],f[(1<<18)];
char ss[(1<<18)+1];
ll r[maxn];
inline void Holy_FWT(int *a,int bit,int mul)
{
    for(int mid=1,t=0;mid<n;mid<<=1,t++)
        for(int len=mid<<1,j=0;j<n;j+=len)
            for(int i=j;i<j+mid;i++)
                if(r[t]>>bit&1)a[i]=(a[i]+1ll*a[i+mid]*mul%mod)%mod;
                else a[i+mid]=(a[i+mid]+1ll*a[i]*mul%mod)%mod;
}
signed main()
{
    s=read();
    for(int i=0;i<s;i++)r[i]=read();
    n=(1<<s);scanf("%s",ss);
    f[0]=1;
    for(int i=0;i<60;i++)
    {
        for(int i=0;i<n;i++)b[i]=ss[i]-'0';
        Holy_FWT(b,i,1);
        Holy_FWT(f,i,1);
        for(int i=0;i<n;i++)f[i]=1ll*f[i]*b[i]%mod;
        Holy_FWT(f,i,mod-1);
    }
    write(f[0]);
    
}