def main():
    
    N = input()
    integer_list = input()
        
    if ((integer_list[0] or integer_list[1] or integer_list[2] or integer_list[3]) == N[0]):
        print(integer_list, 'YES')
    else:
        print(integer_list, 'NO')
    
if __name__ == '__main__':
    main()