# Online Python compiler (interpreter) to run Python online.
# Write Python 3 code in this online editor and run it.

s=input()
len_s=len(s)
is_prime=True
min_execution=2000000
min_result=""
for m in range (2,len_s):
    unit_result=""
    concat_unit_result=""

    if len_s%m==0:
        is_prime=False
        n=int(len_s/m)
        for i in range (0,m):
            unit=[]
            for j in range (0,n):
                # print(n*j+i)
                # print(s[n*j+i])
                unit.append(s[m*j+i])
            unit_result += max(set(unit), key=unit.count)
        for i in range(0,n):
            concat_unit_result += unit_result
        # print(concat_unit_result)
        count_difference=0
        for i in range(0,len_s):
            if s[i]!=concat_unit_result[i]:
                count_difference +=1
        if count_difference < min_execution:
            min_execution = count_difference
            min_result = concat_unit_result

if is_prime :
    result = ""
    for i in range(0,len_s):
        result += s[0]
    print(result)
else:
    print(min_result)