#!/usr/bin/ruby def gen_quad(n) z=n**2 i=0 m=n.times.map{[0]*n} n.times{|r|n.times{|c| j,k=i.divmod(n) j%=4 k%=4 m[r][c]=i+=1 if ((j==0||j==3)&&(k==1||k==2)) || ((j==1||j==2)&&(k==0||k==3)) m[r][c]=z-m[r][c]+1 end }} m end n,x,y,z=gets.split.map(&:to_i) b=gen_quad(n).map{|e|e.map{|f|f-1}} x-=1 y-=1 z-=1 k=z^b[y][x] puts b.map{|e|e.map{|f|(f^k)+1}*' '}