#include <bits/stdc++.h>
// #include <atcoder/all>
using namespace std;
// using namespace atcoder;
typedef int64_t lint;
#define rep(i, n) for(int i=0; i<n; i++)
#define repx(i, l, n) for(int i=l; i<n; i++)
#define all(v) v.begin(), v.end()
#define show(x) cout << #x << ": " << x << endl;
#define list(x) cout << #x << ": " << x << "  ";
#define pb push_back
using vi = vector<string>;
using vvi = vector<vector<string>>;
template<class T> inline void vin(vector<T>& v) { rep(i, v.size()) cin >> v.at(i); }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<class T> inline void drop(T x) { cout << x << endl; exit(0); }
template<class T> void vout(vector<T> v) { rep(i, v.size()) { cout << v.at(i) << ' '; } cout << endl; }
constexpr lint LINF = LLONG_MAX/2;

int main() {
	lint N;
	cin >> N;
	vvi v(N, vi(N));
	rep(i, N) vin(v[i]);

	lint a=0, b=0, c=0, x, y, z;
	if (N == 1) {
		std::cout << "1" << '\n';
	} else if (N == 2) {
		int v2[2][2] = {{1, 1}, {1, -1}};
		rep(i, N) {
			rep(j, N) {
				if (v[i][j] == "?") drop(v2[i][j]);
			}
		}
	} else if (N == 3) {
		int v2[3][3] = {{1, 1, 1}, {1, 1, -1}, {2, -1, 0}};
		rep(i, N) {
			rep(j, N) {
				if (v[i][j] == "?") drop(v2[i][j]);
			}
		}
	} else if (N == 4) {
		int v2[4][4] = {{1, 1, 1, 1}, {1, 1, -1, -1}, {1, -1, 1, -1}, {1, -1, -1, 1}};
		rep(i, N) {
			rep(j, N) {
				if (v[i][j] == "?") drop(v2[i][j]);
			}
		}
	} else if (N == 5) {
		if (v[4][0] == "2" || v[4][2] == "-2") {
			int v2[5][5] = {{1, 1, 1, 1, 1}, {1, 1, 1, -1, -1}, {1, -1, 1, 1, -1}, {1, -1, 1, -1, 1}, {2, 0, -2, 0, 0}};
			rep(i, N) {
				rep(j, N) {
					if (v[i][j] == "?") drop(v2[i][j]);
				}
			}
		} else {
			int v2[5][5] = {{1, 1, 1, 1, 1}, {1, 1, 1, -1, -1}, {2, -1, 2, 0, 0}, {3, 0, -1, 1, -1}, {3, 0, -1, -1, 1}};
			rep(i, N) {
				rep(j, N) {
					if (v[i][j] == "?") drop(v2[i][j]);
				}
			}
		}
	} else if (N == 5) {
		if (v[2][0] == "1" || v[2][2] == "1") {
			int v2[6][6] = {{1, 1, 1, 1, 1, 1}, {1, 1, 1, 1, -1, -1}, {1, -1, 1, -1, 1, -1}, {1, -1, 1, -1, -1, 1}, {2, 1, -1, -2, 0, 0}, {2, -1, -1, 2, 0, 0}};
			rep(i, N) {
				rep(j, N) {
					if (v[i][j] == "?") drop(v2[i][j]);
				}
			}
		} else {
			int v2[6][6] = {{1, 1, 1, 1, 1, 1}, {1, 1, -1, 1, 1, -1}, {2, -1, 0, 2, -1, 0}, {1, 1, 1, -1, -1, -1}, {1, 1, -1, -1, -1, 1}, {2, -1, 0, -2, 1, 0}};
			rep(i, N) {
				rep(j, N) {
					if (v[i][j] == "?") drop(v2[i][j]);
				}
			}
		}
	} else if (N == 8) {
		int v2[8][8] = {{1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, -1, -1, 1, 1, -1, -1}, {1, -1, 1, -1, 1, -1, 1, -1}, {1, -1, -1, 1, 1, -1, -1, 1}, {1, 1, 1, 1, -1, -1, -1, -1}, {1, 1, -1, -1, -1, -1, 1, 1}, {1, -1, 1, -1, -1, 1, -1, 1}, {1, -1, -1, 1, -1, 1, 1, -1}};
		rep(i, N) {
			rep(j, N) {
				if (v[i][j] == "?") drop(v2[i][j]);
			}
		}
	} else if (N == 10) {
		if (v[8][0] == "1" || v[9][0] == "2") {
			int v2[10][10] = {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, 1, -1, -1, 1, 1, 1, -1, -1}, {1, -1, 1, 1, -1, 1, -1, 1, 1, -1}, {1, -1, 1, -1, 1, 1, -1, 1, -1, 1}, {2, 0, -2, 0, 0, 2, 0, -2, 0, 0}, {1, 1, 1, 1, 1, -1, -1, -1, -1, -1}, {1, 1, 1, -1, -1, -1, -1, -1, 1, 1}, {1, -1, 1, 1, -1, -1, 1, -1, -1, 1}, {1, -1, 1, -1, 1, -1, 1, -1, 1, -1}, {2, 0, -2, 0, 0, -2, 0, 2, 0, 0}};
			rep(i, N) {
				rep(j, N) {
					if (v[i][j] == "?") drop(v2[i][j]);
				}
			}
		} else {
			int v2[10][10] = {{1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, {1, 1, -1, -1, 1, 1, -1, 1, 1, -1}, {2, -1, 0, 0, 2, 2, 0, -1, 2, 0}, {3, 0, -1, 1, -1, 3, 1, 0, -1, -1}, {3, 0, 1, -1, -1, 3, -1, 0, -1, 1}, {1, 1, 1, 1, 1, -1, -1, -1, -1, -1}, {1, 1, -1, -1, 1, -1, 1, -1, -1, 1}, {2, -1, 0, 0, 2, -2, 0, 1, -2, 0}, {3, 0, -1, 1, -1, -3, -1, 0, 1, 1}, {3, 0, 1, -1, -1, 3, 1, 0, 1, -1}};
			rep(i, N) {
				rep(j, N) {
					if (v[i][j] == "?") drop(v2[i][j]);
				}
			}
		}
	}
}