---

# # Задача 1
# person = {
#     "имя": input("имя "),
#     "возраст": input("возраст "),
#     "город": input("город ")
# }
# for k, v in person.items():
#     print(f"{k}: {v}")
#
# # Задача 2
# prices = {
#     "яблоко": 80,
#     "банан": 120,
#     "груша": 150
# }
# fruit = input("какой фрукт ")
# print(prices[fruit])
#
# # Задача 3
# student = {
#     "имя": "Иван",
#     "класс": 11
# }
# subject = input("предмет ")
# student["предмет"] = subject
# for k, v in student.items():
#     print(f"{k}: {v}")
#
# # Задача 4
# stock = {
#     "яблоки": 50,
#     "бананы": 30
# }
# count = int(input("цена "))
# stock["бананы"] = count
# for k, v in stock.items():
#     print(f"{k}: {v}")
#
# # Задача 5
# words = {
#     "cat": "кот",
#     "dog": "собака"
# }
# word = input("слово ")
# print(words.get(word, "Нет в словаре"))
#
# # Задача 6
# contacts = {
#     "Маша": "89001112233",
#     "Саша": "89004445566"
# }
# name = input("имя ")
# print(name in contacts)
#
# # Задача 7
# players = {
#     "Alex": 100,
#     "John": 80,
#     "Kate": 95
# }
# name = input("имя ")
# if name in players:
#     del players[name]
# for k, v in players.items():
#     print(f"{k}: {v}")
#
# # Задача 8
# grades = {
#     "математика": 5,
#     "физика": 4,
#     "химия": 5
# }
# for subject in grades:
#     print(subject)
#
# # Задача 9
# salaries = {
#     "Иванов": 50000,
#     "Петров": 60000,
#     "Сидоров": 55000
# }
# for salary in salaries.values():
#     print(salary)
#
# Задача 10
notebook = {
    "ручка": 2,
    "тетрадь": 5,
    "карандаш": 3,
    "линейка": 1
}
print(len(notebook))