def wrap(string, max_width):
    new_str = ''
    
    for i in range(0, len(string), max_width):
        new_str += string[i: i + max_width] + '\n'
        
    return new_str
    
if __name__ == '__main__':
    string, max_width = input(), int(input())
    result = wrap(string, max_width)
    print(result)