#include <bits/stdc++.h>   using namespace std;   const int N = 12;   int p[1 << N], q[1 << N], a[1 << N], pos[1 << N], ans[1 << N];   void do_swap(int x, int y) {     int val = (p[x] ^ q[x] ^ a[x]);     if (!val) {       return;     }     int idx = pos[a[x] ^ q[x]];     swap(pos[p[x]], pos[p[idx]]);     swap(p[x], p[idx]);     swap(q[y], q[idx]);     do_swap(idx, y);   }   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     int n, i, j, k, l = 0;     cin >> n;     n = (1 << n);     for (i = 0; i < n; i++) {       cin >> a[i];       l ^= a[i];       p[i] = q[i] = pos[i] = i;     }     if (l) {       cout <<  Fou ;       return 0;     }     for (i = 0; i + 1 < n; i++) {       do_swap(i, i + 1);     }     cout <<  Shi n ;     for (i = 0; i < n; i++) {       cout << p[i] <<    ;     }     cout <<   n ;     for (i = 0; i < n; i++) {       cout << q[i] <<    ;     }   }   