#include <iostream> using namespace std; int a1[1010][1010]; int main() { int i,j,m,n,a,b,c,d; cin>>n>>m; for(i=1;i<=n;i++) for(j=1;j<=m;j++) cin>>a1[i][j]; a=1; b=1; c=n; d=m; while(3>2) { for(i=b;i<=d;i++) cout<<a1[a][i]<<" "; for(i=a+1;i<=c;i++) cout<<a1[i][d]<<" "; if(c!=a) for(i=d-1;i>=b;i--) cout<<a1[c][i]<<" "; if(b!=d) for(i=c-1;i>a;i--) cout<<a1[i][b]<<" "; if(a>=c || b>=d) break; a++; b++; c--; d--; } return 0; }