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#include <iostream>
#include <vector>
using namespace std;
const int N = 100;
int main() 
{
    vector<vector<int>> w(N, vector<int>(N, 0));
    int x = N / 2, y = N / 2; 
    int dx = 0, dy = -1; 
    for (int i = 0; i < N * N; i++) 
    {
        w[x][y] = 1;
        int nx = x + dy, ny = y - dx;
        if (nx >= 0 && ny >= 0 && nx < N && ny < N && w[nx][ny] == 0) 
        {
            int r = dx;
            dx = -dy;
            dy = r;
        }
        x += dx;
        y += dy;
        if (x < 0 || y < 0 || x >= N || y >= N || w[x][y] == 1) 
        {
            x -= dx;
            y -= dy;
            int r = dx;
            dx = -dy;
            dy = r;
        }
    }
    for (int i = 0; i < N; i++) 
    {
        for (int j = 0; j < N; j++) 
        {
            cout << w[i][j];
        }
        cout << endl;
    }
    return 0;
}