#include <iostream>
#include <cstdio>
#include <string>

using namespace std;

string n;
char mat[15][15];
int s,a,r,rmax,sk,x;

int main()
{
    cin>>n;
    a=n.length();
    s=1;
    do{
        r=0;
        r=a/s;
        if (r*s==a)
            if (r>rmax){
                rmax=r;
                sk=s;
                }
        ++s;
        }while((a/s)<=s);
    x=0;
    for (int i=0; i<sk;++i) {
        for (int j=0;j<rmax;++j){
              mat[j][i]=n[j+x];
              }
        x+=4;
          }
    for (int i=0;i<rmax;++i){
        for (int j=0;j<sk;++j){
            cout<< mat[i][j];}
        }

    return 0;
}