class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

def print_people(people):
    for person in people.values():
        print(f"Name: {person.name}, Age: {person.age}")

def find_old(people_dict):
    if not people_dict:
        print("The dictionary is empty.")
        return

    oldest_person = max(people_dict, key=lambda x: people_dict[x])

    print(f"The oldest person is {oldest_person} with age {people_dict[oldest_person]}")

people_list = {
    "kid1": Person("kid1", 1),
    "kid2": Person("kid2", 2),
    "kid3": Person("kid3", 3)
}

print_people(people_list)

people_dict = {"kid1": 1, "kid2": 2, "kid3": 3}
find_old(people_dict)

# Output is:
# Name: kid1, Age: 1
# Name: kid2, Age: 2
# Name: kid3, Age: 3
# The oldest person is kid3 with age 3

Name: kid1, Age: 1
Name: kid2, Age: 2
Name: kid3, Age: 3
The oldest person is kid3 with age 3