#include <iostream>
using namespace std;
int n;

int arr[101][101] = {0,};
int visited[101][101] = {0,};

void f(int x,int y,int s){
    
    if (x > n || x < 1 || y > n || y < 1 ){
        return;
    }

    if( arr[x][y] != 0 && arr[x][y] <= s) {
        return;
    }
    
    arr[x][y] = s;
    
    f(x,y+1,s+1);
    f(x,y-1,s+1);
    f(x+1,y,s+1);
    f(x-1,y,s+1);
}

int main(){
    int x,y;
    int s = 1;
    cin >> n;
    cin >> x >> y;
    f(x,y,s);
    
    for (int i = 1;i <= n;i++){
        for (int j = 1;j <= n;j++){
            cout << arr[i][j] << " ";
        }
        cout << endl;
    }
    return 0;
}