#include<stdio.h>
int main(){

    int q,n,i,j;    //入力用
    int pos_x = 0,pos_y = 0;    //位置座標
    int t = 0,mode = 0,flg = 1,cnt = 0,r,f;            //制御用変数
    scanf("%d%d%d%d",&q,&n,&i,&j);  //条件入力
    
    signed int map[n][n];
    for(r= 0;r < n;r++){
        for(f = 0;f < n;f++){
            map[r][f] = -1;
        }
    }
    map[0][0] = 0;
    for(r = 0;r < q;r++){
        flg = 1;
        while(flg){
            switch(mode){
                case 0:
                    if(map[pos_x][pos_y + 1] == -1 && (pos_y + 1) < n){
                        map[pos_x][++pos_y] = ++t;
                        cnt++;
                    }else{
                        mode++;
                    }
                    break;
                case 1:
                    if(map[pos_x + 1][pos_y] == -1 && (pos_x + 1) < n){
                        map[++pos_x][pos_y] = ++t;
                        cnt++;
                    }else{
                        mode++;
                    }
                    break;
                case 2:
                    if(map[pos_x][pos_y - 1] == -1 && (pos_y - 1) > 0){
                        map[pos_x][--pos_y] = ++t;
                        cnt++;
                    }else{
                        mode++;
                    }
                    break;
                case 3:
                    if(map[pos_x - 1][pos_y] == -1 && (pos_x - 1) > 0){
                        map[--pos_x][pos_y] = ++t;
                        cnt++;
                    }else{
                        mode++;
                    }
                    break;
                case 4:
                    if (cnt == 0)   flg = 0;
                    mode = 0;
                    cnt = 0;
                    break;
            }
        }
        printf("%d\n",map[i][j]);
    }
    return 0;
}