/**
 * code generated by JHelper
 * More info: https://github.com/AlexeyDmitriev/JHelper
 * @author majk
 */

#ifndef MAJK_LIB
#define MAJK_LIB

#include <vector>
#include <stack>
#include <iostream>
#include <unordered_map>
#include <unordered_set>
#include <map>
#include <iomanip>
#include <set>
#include <functional>
#include <algorithm>
#include <numeric>
#include <cassert>
#include <cmath>
#include <string>
#include <queue>
#include <array>
#include <bitset>
using namespace std;

#define x first
#define y second
typedef std::pair<int,int> pii; typedef long long ll; typedef unsigned long long ull; typedef unsigned int ui; typedef pair<ui,ui> puu;

template <typename T, typename U> std::istream&operator>>(std::istream&i, pair<T,U>&p) {i >> p.x >> p.y; return i;}
template<typename T>std::istream&operator>>(std::istream&i,vector<T>&t) {for(auto&v:t){i>>v;}return i;}
template <typename T, typename U> std::ostream&operator<<(std::ostream&o, const pair<T,U>&p) {o << p.x << ' ' << p.y; return o;}
template<typename T>std::ostream&operator<<(std::ostream&o,const vector<T>&t) {if(t.empty())o<<'\n';for(size_t i=0;i<t.size();++i){o<<t[i]<<" \n"[i == t.size()-1];}return o;}
template<typename T> using minheap = priority_queue<T, vector<T>, greater<T>>;
template<typename T> using maxheap = priority_queue<T, vector<T>, less<T>>;
ui logceil(ll x) { return x?8*sizeof(ll)-__builtin_clzll(x):0; }

namespace std { template<typename T,typename U>struct hash<pair<T,U>>{hash<T>t;hash<U>u;size_t operator()(const pair<T,U>&p)const{return t(p.x)^(u(p.y)<<7);}}; }
template<typename T,typename F>T bsh(T l,T h,const F&f){T r=-1,m;while(l<=h){m=(l+h)/2;if(f(m)){l=m+1;r=m;}else{h=m-1;}}return r;}
template<typename F> double bshd(double l,double h,const F&f,double p=1e-9){ui r=3+(ui)log2((h-l)/p);while(r--){double m=(l+h)/2;if(f(m)){l=m;}else{h=m;}}return (l+h)/2;}
template<typename T,typename F>T bsl(T l,T h,const F&f){T r=-1,m;while(l<=h){m=(l+h)/2;if(f(m)){h=m-1;r=m;}else{l=m+1;}}return r;}
template<typename F> double bsld(double l,double h,const F&f,double p=1e-9){ui r=3+(ui)log2((h-l)/p);while(r--){double m=(l+h)/2;if(f(m)){h=m;}else{l=m;}}return (l+h)/2;}
template<typename T> T gcd(T a,T b) { if (a<b) swap(a,b); return b?gcd(b,a%b):a; }


template<typename T>class vector2:public vector<vector<T>>{public:vector2(){} vector2(size_t a,size_t b,T t=T()):vector<vector<T>>(a,vector<T>(b,t)){}};
template<typename T>class vector3:public vector<vector2<T>>{public:vector3(){} vector3(size_t a,size_t b,size_t c,T t=T()):vector<vector2<T>>(a,vector2<T>(b,c,t)){}};
template<typename T>class vector4:public vector<vector3<T>>{public:vector4(){} vector4(size_t a,size_t b,size_t c,size_t d,T t=T()):vector<vector3<T>>(a,vector3<T>(b,c,d,t)){}};
template<typename T>class vector5:public vector<vector4<T>>{public:vector5(){} vector5(size_t a,size_t b,size_t c,size_t d,size_t e,T t=T()):vector<vector4<T>>(a,vector4<T>(b,c,d,e,t)){}};


#endif

class EPairingPoints {
public:
    void solve(istream& cin, ostream& cout) {
        int N; cin >> N;
        N *= 2;
        vector2<bool> E(2*N, 2*N);
        for (int i = 0; i < N; ++i) {
            string S; cin >> S;
            for (int j = 0; j < N; ++j) {
                E[i][j] = E[i][j+N] = E[i+N][j] = E[i+N][j+N] = S[j] == '1';
            }
        }

        vector3<ll> D(N, N+1, N+1, 0);
        for (int i = 0; i < N; ++i) D[1][i][i] = 1;
        for (int len = 3; len < N; len += 2) {
            for (int x1 = 0; x1 + len <= N; ++x1) {
                for (int l1 = 1; l1 < len; l1 += 2) {
                    for (int c1 = x1; c1 < x1 + l1; ++c1) {
                        if (D[l1][x1][c1] == 0) continue;
                        int x2 = x1 + l1;
                        for (int l2 = 1; l2 + l1 < len; l2 += 2) {
                            int x3 = x2 + l2;
                            int l3 = len - l1 - l2;
                            for (int c3 = x3; c3 < x3 + l3; ++c3) {
                                if (D[l3][x3][c3] && E[c1][c3]) {
                                    for (int c2 = x1 + l1; c2 < x2 + l2; ++c2) {
                                        D[len][x1][c2] += D[l1][x1][c1] * D[l2][x2][c2] * D[l3][x3][c3];
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }

        ll ans = 0;
        for (int leftCenter = 0; leftCenter < N - 1; ++leftCenter) {
            if (E[leftCenter][N-1] && D[N-1][0][leftCenter]) {
                ans += D[N-1][0][leftCenter];
            }
        }

        cout << ans << endl;
    }
};


int main() {
	ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
	EPairingPoints solver;
	std::istream& in(std::cin);
	std::ostream& out(std::cout);
	solver.solve(in, out);
    return 0;
}


Measured memory_bytes: 896