Encryption

//https://www.hackerrank.com/challenges/encryption/problem
#include <bits/stdc++.h>

using namespace std;

int main() 
{
    string s;
    cin >> s;
    int n = s.size();
    int row = round(sqrt(n));
    int col;
    if (row >= sqrt(n))
        col = row; 
    else 
        col = row + 1;
    for(int j=0;j<col;++j) 
    {
        for(int i=j; i<n;i+=col)
            cout << s[i];
        cout << ' ';
    }
    return 0;
}