#include <bits/stdc++.h> 
using namespace std;
int main(){
	int i,j,n,m,a[200][200]={0},x,d,c,k;
	cin>>n>>m;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			cin>>a[i][j];
		}
	}
	x=a[0][0];
	d=a[0][0];
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			if(x>a[i][j]){
				x=a[i][j];
				k=a[i][j];
			}else{
				d=a[i][j];
			    c=a[i][j];
			}
		}
	}
	swap(k,c);
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			cout<<a[i][j]<<" ";
		}
		cout<<endl;
    }

}

/**************************************************************
	Problem: 1999
	User: jiangyuanfeng
	Language: C++
	Result: Wrong Answer
****************************************************************/