/*****************************************
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#include <queue>
#include <set>
#include <math.h>
#include <stack>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string.h>
#include <algorithm>
#include <cstdio>
#include <cstring>
using namespace std;
#define LL long long
const int N = 1e4 + 10;
const int INF = 0x3f3f3f3f;
struct node {
    int x, y;

    node(int xx, int yy) {
        x = xx, y = yy;
    }
};
int n, m, x, y;
queue<node> q;
int a[N][N];
int vis[N][N];
int dx[] = {-2, -2, -1, 1, 2, 2, 1, -1};
int dy[] = {-1, 1, 2, 2, 1, -1, -2, -2};
void bfs() {
    q.push(node(x, y));
    a[x][y] = 0;
    vis[x][y] = 1;
    while (!q.empty()) {
        int x = q.front().x;
        int y = q.front().y;
        q.pop();
        for (int i = 0; i < 8; i++) {
            int xx = x + dx[i];
            int yy = y + dy[i];
            if (xx >= 1 && yy >= 1 && xx <= n && yy <= m && !vis[xx][yy]) {
                a[xx][yy] = a[x][y] + 1;
                q.push(node(xx, yy));
                vis[xx][yy] = 1;
            }
        }
    }
}
int main() {
    cin >> n >> m >> x >> y;
    memset(a, -1, sizeof a);
    bfs();
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            printf("%-5d", a[i][j]);
        }
        cout << endl;
    }
    return 0;
}

#include <queue>
#include <cstring>
using namespace std;
int N,M,sn,sm;
int a[500][500];
int dx[] = {-1,-2,-2,-1,1,2,2,1};
int dy[] = {-2,-1,1,2,2,1,-1,-2};
bool vis[500][500] = {false};

struct Node
{
    int x;
    int y;
    int step;
};
queue<Node>q;

bool ia(int x,int y)
{
    if (x >= 1 && x <= N && y >= 1 && y <= M)
    {
        return true;
    }
    return false;
}

void bfs(int x,int y)
{
    q.push((Node){x,y,0});
    vis[x][y] = true;
    a[x][y] = 0;
    while (!q.empty())
    {
        Node temp = q.front();
        q.pop();
        for (int i = 0;i < 8;i++)
        {
            int nx = temp.x + dx[i];
            int ny = temp.y + dy[i];
            if (ia(nx,ny) == true && vis[nx][ny] == false)
            {
                q.push((Node){nx,ny,temp.step + 1});
                a[nx][ny] = temp.step + 1;
                vis[nx][ny] = true;
            }
        }
    }
}

int main()
{
	memset(a,-1,sizeof a);
    cin >> N >> M >> sn >> sm;
    bfs(sn,sm);
    for (int i = 1;i <= N;i++)
    {
        for (int j = 1;j <= M;j++)
        {
            printf("%-5d",a[i][j]);
        }
        cout << endl;
    }
    return 0;
}