#include<bits/stdc++.h> using namespace std; int n,m,k=0,l,fy[4]={1,0,-1,0},fx[4]={0,1,0,-1},ans1; int a[1001][1001]; void asd(int x,int y){ k++; a[x][y]=k; for(int i=0;i<4;i++){ int tx=x+fx[i]; int ty=y+fy[i]; if(a[tx][ty]==0&&tx>0&&ty>0&&tx<=n&&ty<=m){ asd(tx,ty); } } return; } int main(){ cin>>n>>m; for(int i=1;i<=n;i++){ for(int j=1;j<=m;j++){ a[i][j]=0; } } asd(1,1); for(int i=1;i<=n;i++){ for(int j=1;j<=m;j++){ cout<<setw(3)<<a[i][j]; } cout<<endl; } } /************************************************************** Problem: 1586 User: zhengzihao Language: C++ Result: Accepted Time:45 ms Memory:5988 kb ****************************************************************/