#include<bits/stdc++.h>
using namespace std;
int n,a[205],sum,avg,ans; 
int main(){
//	
//10	
//    1  2  3  4
//	9  9 12 10
//1   10 8 12 10
//2   10 10 10 10
//输入n
//输入一个一维数组
//计算平均值
//循环从1到n/2+1
//	i				1    2
//	n-i+1			4    3
// 	
// 	只要不等于平均值那么都要移动   i是和下一个交换 
//	                               n-i+1是和上一个交换 
// 	3   5
// 	i   i+1
//	 avg-3
	 cin>>n;
 	for(int i=1;i<=n;i++){
 		cin>>a[i];
 		sum+=a[i];
 	}
 	avg=sum/n;
 	for(int i=1;i<=n/2+1;i++){
 		if(a[i]!=avg){
 			ans++;
 			
 			
 			a[i+1]+=a[i]-avg;
 			a[i]=avg;
 			for(int j=1;j<=n;j++) cout<<a[j]<<" ";
			cout<<endl; 
 		}
 		if(a[n-i+1]!=avg){
 			ans++;
 		
 			a[n-i]+=a[n-i+1]-avg;
 			a[n-i+1]=avg;
 				for(int j=1;j<=n;j++) cout<<a[j]<<" ";
			cout<<endl; 
 		}
 		
 		
 	}
 	cout<<ans;
	return 0;
}

/**************************************************************
	Problem: 1371
	User: admin
	Language: C++
	Result: Wrong Answer
****************************************************************/