#include<stdio.h>int title;int board[20][20];void chessboard(int tr,int tc,int r,int c,int size){ int s,t; if(size==1) { return ; } s=size/2; t=++title; if(tr<r+s&&tc<c+s) { chessboard(tr,tc,r,c,s); } else { board[r+s-1][c+s-1]=t; chessboard(r+s-1,c+s-1,r,c,s); } if(tr<r+s&&tc>=c+s) { chessboard(tr,tc,r,c+s,s); } else { board[r+s-1][c+s]=t; chessboard(r+s-1,c+s,r,c+s,s); } if(tr>=r+s&&tc<c+s) { chessboard(tr,tc,r+s,c,s); } else { board[r+s][c+s-1]=t; chessboard(r+s,c+s-1,r+s,c,s); } if(tr>=r+s&&tc>=c+s) { chessboard(tr,tc,r+s,c+s,s); } else { board[r+s][c+s]=t; chessboard(r+s,c+s,r+s,c+s,s); }}int main(){ int tr,tc,size,i,j; while(scanf("%d%d%d",&size,&tr,&tc)!=EOF) { chessboard(tr,tc,0,0,size); for(i=0;i<size;i++) { for(j=0;j<size;j++) { printf("%d ",board[i][j]); } printf("\n"); } } return 0;}
