import textwrap

def wrap(string, max_width):
    word_list = []
    for i in range(0, len(string), max_width):
        word_list.append(string[i: i+max_width])
    return "\n".join(word_list)

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