Предизвикателства > Осмодекемврийско пътуване > Решения > Решението на Константин Кирязов
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1 успешни теста
4 неуспешни теста
Код 
 1class Car:
 2    def __init__(self):
 3        self.students = set()
 4
 5    def add_student(self, student):
 6        if len(self.students) < 4:
 7            self.students.add(student)
 8            student.current_car = self
 9        else:
10            raise EnvironmentError("Car is full")
11
12    def remove_student(self, student):
13        if student in self.students:
14            self.students.remove(student)
15            student.current_car = None
16        else:
17            raise EnvironmentError("Student not in car")
18
19class Student:
20    def __init__(self, preferences):
21        self.preferences = preferences
22        self.current_car = None
23
24    def is_comfy(self):
25        if self.current_car:
26            return all(self.preferences == student.preferences for student in self.current_car.students)
27        else:
28            return None
29
30def organize(cars, students):
31    if len(cars) < len(students)/4 :
32        return False
33    for car in cars:
34        for student in students:
35            if not bool(student.current_car):
36                try:
37                    car.add_student(student)
38                    if all(student.is_comfy() for student in student.current_car.students):
39                        continue
40                    else:
41                        car.remove_student(student)
42                except EnvironmentError:
43                    continue
44    return all(bool(student.current_car) for student in students)

E.EEE
======================================================================
ERROR: test_big_input (test.TesFull)
Test a big case to ensure no huge bruteforcing.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 90, in test_big_input
anti_rusalov_true(self, organize(cars, students))
File "/tmp/solution.py", line 35, in organize
if not bool(student.current_car):
AttributeError: 'Student' object has no attribute 'current_car'

======================================================================
ERROR: test_real_case_false (test.TesFull)
Test a real case for False.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 36, in test_real_case_false
anti_rusalov_false(self, organize(cars, students))
File "/tmp/solution.py", line 35, in organize
if not bool(student.current_car):
AttributeError: 'Student' object has no attribute 'current_car'

======================================================================
ERROR: test_regular_case (test.TesFull)
Test a regular case.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 47, in test_regular_case
anti_rusalov_true(self, organize(cars, students))
File "/tmp/solution.py", line 35, in organize
if not bool(student.current_car):
AttributeError: 'Student' object has no attribute 'current_car'

======================================================================
ERROR: test_single_solution_case (test.TesFull)
Test a single-solution case.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 65, in test_single_solution_case
anti_rusalov_true(self, organize(cars, students))
File "/tmp/solution.py", line 35, in organize
if not bool(student.current_car):
AttributeError: 'Student' object has no attribute 'current_car'

----------------------------------------------------------------------
Ran 5 tests in 0.001s

FAILED (errors=4)

Дискусия
Георги Кунчев
07.12.2023 16:44
Ти си дефинирал твои версии на студент и кола, но ние ще тестваме с наши. В кодът си очакваш студентите да имат "current_car", но нашите нямат. Единтвените методи, с които можеш да интерфейсваш студент и кола, са трите, които са в условието.
История
f1class Car:f1class Car:
2    def __init__(self):2    def __init__(self):
3        self.students = set()3        self.students = set()
44
5    def add_student(self, student):5    def add_student(self, student):
6        if len(self.students) < 4:6        if len(self.students) < 4:
7            self.students.add(student)7            self.students.add(student)
8            student.current_car = self8            student.current_car = self
9        else:9        else:
10            raise EnvironmentError("Car is full")10            raise EnvironmentError("Car is full")
1111
12    def remove_student(self, student):12    def remove_student(self, student):
13        if student in self.students:13        if student in self.students:
14            self.students.remove(student)14            self.students.remove(student)
15            student.current_car = None15            student.current_car = None
16        else:16        else:
17            raise EnvironmentError("Student not in car")17            raise EnvironmentError("Student not in car")
1818
19class Student:19class Student:
20    def __init__(self, preferences):20    def __init__(self, preferences):
21        self.preferences = preferences21        self.preferences = preferences
22        self.current_car = None22        self.current_car = None
2323
24    def is_comfy(self):24    def is_comfy(self):
25        if self.current_car:25        if self.current_car:
26            return all(self.preferences == student.preferences for student in self.current_car.students)26            return all(self.preferences == student.preferences for student in self.current_car.students)
27        else:27        else:
28            return None28            return None
2929
30def organize(cars, students):30def organize(cars, students):
31    if len(cars) < len(students)/4 :31    if len(cars) < len(students)/4 :
32        return False32        return False
33    for car in cars:33    for car in cars:
34        for student in students:34        for student in students:
35            if not bool(student.current_car):35            if not bool(student.current_car):
36                try:36                try:
37                    car.add_student(student)37                    car.add_student(student)
38                    if all(student.is_comfy() for student in student.current_car.students):38                    if all(student.is_comfy() for student in student.current_car.students):
39                        continue39                        continue
40                    else:40                    else:
41                        car.remove_student(student)41                        car.remove_student(student)
42                except EnvironmentError:42                except EnvironmentError:
43                    continue43                    continue
t44    if not all(bool(student.current_car) for student in students):t44    return all(bool(student.current_car) for student in students)
45        return False
46    else:
47        return True
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