import textwrap

def wrap(string, max_width):
    string_list= []
    i = 0
    while(i<= len(string)):
        string_sliced = string[i: i+max_width]
        string_list.append(string_sliced)
        i = i + max_width
    for item in string_list:
        print(item)
    return ""   

if __name__ == '__main__':
    string, max_width = input(), int(input())
    result = wrap(string, max_width)
    print(result)