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#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

class MapAnalyzer {
private:
    int n;
    vector<vector<int>> map;
    vector<int> v;
    vector<int> re_v;

public:
    void init(int N, vector<vector<int>>& mMap) {
        n = N;
        map = mMap;
        v.clear();
        re_v.clear();
    }

    int numberOfCandidate(int M, int mStructure[5]) {
        if(M == 1) return n*n;

        int cnt = 0;
        bool check_vertical, check_horizontal;

        for(int i = 0; i < M; i++) {
            v.push_back(mStructure[i]);
            re_v.push_back(mStructure[M-i-1]);
        }

        for(int i = 0; i < n; i++) {
            for(int j = 0; j < n; j++) {
                check_horizontal = true;
                check_vertical = true;

                // Check horizontal shape
                if (j + M - 1 < n) {
                    for (int k = 0; k < M-1; k++) {
                        if (map[i][j+k] + v[k] != map[i][j+k+1] + v[k+1] && map[i][j+k] + re_v[k] != map[i][j+k+1] + re_v[k+1]) {
                            check_horizontal = false;
                            break;
                        }
                    }
                    if (check_horizontal) cnt++;
                }
                
                // Check vertical shape
                if (i + M - 1 < n) {
                    for (int k = 0; k < M-1; k++) {
                        if (map[i+k][j] + v[k] != map[i+k+1][j] + v[k+1] && map[i+k][j] + re_v[k] != map[i+k+1][j] + re_v[k+1]) {
                            check_vertical = false;
                            break;
                        }
                    }
                    if (check_vertical) cnt++;
                }
            }
        }
        return cnt;
    }
};

int main() {
    freopen("sample_input.txt", "r", stdin);

    int n;
    cin >> n;

    vector<vector<int>> map(n, vector<int>(n));
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            cin >> map[i][j];
        }
    }

    MapAnalyzer analyzer;
    analyzer.init(n, map);
    
    int mStructure[3] = {1, 1, 1};
    cout << analyzer