#include<cstdio>

 #include<string.h>

 int main(){

     char c[],u[][];

     scanf("%s",&c);

     memset(u,' ',sizeof(u));

     int n=strlen(c)+;

     int n1=n/,n2=n/+n%,index=;

     for(int i=;i<n1;i++) u[i][]=c[index++];

     for(int i=;i<=n2-;i++)u[n1-][i]=c[index++];

     for(int i=n1-;i>=;i--)u[i][n2-]=c[index++];

     for(int i=;i<n1;i++){

         for(int j=;j<n2;j++) printf("%c",u[i][j]);

         printf("\n");

     }

     return ;

 }