#include <iostream>
#include <vector>
#include <cmath>
#include <string>
using namespace std;
int main()
{
	string s;
	cin>>s;
	int n= ceil ( sqrt ( static_cast<double>(s.size())));
	vector< vector<char> > a(n);
	int i=0,j=0;
	while(j!=s.size())
	{
		a[i].push_back(s[j]);
		++j;
		++i;
		if(i==n)
			i=0;
	}
	for(int i=0;i<n;++i)
	{
		for(int j=0;j<a[i].size();++j)
			cout<<a[i][j];
		cout<<' ';
	}
	return 0;
 
}