from math import sqrt as sqrt
from math import ceil as ceil
from math import floor as floor
s=input()
e=[]
r,c=floor(sqrt(len(s))),ceil(sqrt(len(s)))
for x in range(c):
    pos=x
    temp=''
    while(pos<len(s)):
        temp+=s[pos]
        pos+=r+1
    e.append(temp)
t=' '
e=t.join(e)
print(e)