#include <bits/stdc++.h>

const int maxn = 1 << 18;
typedef long long ll;
const ll mo = 998244353;

int n;
ll c[maxn], d[maxn], l[maxn], h[maxn], b[maxn], a[maxn];

ll mpow(ll u, ll k) {
    ll ans = 1;
    for(; k > 0; k >>= 1, u = u * u % mo) {
        if(k & 1) {
            ans = ans * u % mo;
        }
    }
    return ans;
}

void fwt(const ll *u, ll *v) {
    memcpy(v, u, sizeof(*u) * n);
    for(int d = 1; d < n; d *= 2)
    for(int i = 0; i < n; i += d * 2)
    for(int j = 0; j < d; ++j) {
        auto ui = v[i + j], uj = v[i + j + d];
        auto &vi = v[i + j], &vj = v[i + j + d];
        vi = (ui + uj);
        vj = (ui - uj);
    }
}

int main() {
    scanf("%d", &n);
    n = 1 << n;
    for(int i = 0; i < n; ++i) {
        scanf("%lld", c + i);
    }
    for(int i = 0; i < n; ++i) {
        scanf("%lld%lld", l + i, h + i);
    }
    fwt(c, d);
    for(int i = 0; i < n; ++i) {
        if(d[i] >= 0)
            b[i] = h[i];
        else
            b[i] = l[i];
    }
    fwt(b, a);
    ll ans = 0ll;
    for(int i = 0; i < n; ++i)
        ans = (ans + (a[i] % mo) * (c[i] % mo) % mo) % mo;
    ans = ans * mpow(n, mo - 2) % mo;
    ans = (ans + mo) % mo;
    printf("%lld\n", ans);
    return 0;
}