I tried to submit 2 different solutions: sorted by start time and not
sorted.
Both solutions failed.
Sorted by start time -> I didn't print them in the original order. So
simple tests failed because of that. Thank you.
But for the original order -> which corner cases did you test for your
solution?
вторник, 7 апреля 2020 г., 4:05:53 UTC+3 пользователь Leandro Coutinho
написал:
>
> Does your code print the answer in the original order?
>
> On Monday, April 6, 2020 at 9:45:39 PM UTC-3, Olena Lizina wrote:
>>
>> Hi all,
>>
>> I didn't pass the Qualification Round 2020 because stuck with Parenting
>> Partnering Returns.
>> My solution passes the Sample test cases, but failed on the first Test
>> Set.
>>
>> I wrote unit tests and tried different data sets to test my code, but the
>> Google System didn't accept it.
>> Today I checked solutions of others. Found an interesting solution and
>> tried to find out what did I miss.
>> Found nothing :-(
>>
>> Can anybody help my to find some corner cases that I missed?
>> Please!
>>
>> #include <iostream>
>> #include <vector>
>> #include <algorithm>
>>
>> using namespace std;
>>
>> class Activity
>> {
>> public:
>> Activity(const int startTime, const int endTime)
>> : m_startTime{startTime}
>> , m_endTime{endTime}
>> {
>> }
>>
>> bool overlaps(const Activity& other) const
>> {
>> bool result {true};
>> if (m_startTime > other.m_startTime)
>> {
>> result = m_startTime < other.m_endTime;
>> }
>> else
>> {
>> result = other.m_startTime < m_endTime;
>> }
>> return result;
>> }
>>
>> int m_startTime;
>> int m_endTime;
>> };
>>
>> class Schedule
>> {
>> public:
>> void addActivity(const Activity& activity)
>> {
>> m_activities.push_back(activity);
>> }
>>
>> void sortActivities()
>> {
>> std::sort(m_activities.begin(), m_activities.end(), [](Activity lhs
>> , Activity rhs)
>> {
>> return lhs.m_startTime < rhs.m_startTime;
>> });
>> }
>>
>> std::string getSchedule()
>> {
>> std::string res;
>>
>> std::vector<Activity> Jamies;
>> std::vector<Activity> Camerons;
>>
>> for (size_t i = 0; i < m_activities.size(); ++i)
>> {
>> auto& currActivity = m_activities.at(i);
>> if (Jamies.cend() == std::find_if(Jamies.cbegin(), Jamies.cend
>> (), [&currActivity](const Activity& activity)
>> {
>> return activity.overlaps(
>> currActivity);
>> }))
>> {
>> Jamies.push_back(currActivity);
>> res += "J";
>> }
>> else if (Camerons.cend() == std::find_if(Camerons.cbegin(),
>> Camerons.cend(), [&currActivity](const Activity& activity)
>> {
>> return activity.
>> overlaps(currActivity);
>> }))
>> {
>> Camerons.push_back(currActivity);
>> res += "C";
>> }
>> else
>> {
>> res = "IMPOSSIBLE";
>> break;
>> }
>> }
>> return res;
>> }
>> private:
>> std::vector<Activity> m_activities;
>> };
>>
>> void assert(const std::string& func, const bool validate)
>> {
>> if (validate)
>> {
>> std::cout << func << ": OK" << std::endl;
>> }
>> else
>> {
>> std::cout << func << ": NOK" << std::endl;
>> }
>> }
>>
>> void testActivity()
>> {
>> {
>> Activity lhs(0, 1);
>> Activity rhs(0, 1);
>> assert(__FUNCTION__, lhs.overlaps(rhs));
>> assert(__FUNCTION__, rhs.overlaps(lhs));
>> }
>> {
>> Activity lhs(0, 10);
>> Activity rhs(0, 1);
>> assert(__FUNCTION__, lhs.overlaps(rhs));
>> assert(__FUNCTION__, rhs.overlaps(lhs));
>> }
>> {
>> Activity lhs(0, 10);
>> Activity rhs(3, 10);
>> assert(__FUNCTION__, lhs.overlaps(rhs));
>> assert(__FUNCTION__, rhs.overlaps(lhs));
>> }
>> {
>> Activity lhs(0, 10);
>> Activity rhs(10, 15);
>> assert(__FUNCTION__, !lhs.overlaps(rhs));
>> assert(__FUNCTION__, !rhs.overlaps(lhs));
>> }
>> {
>> Activity lhs(0, 10);
>> Activity rhs(11, 15);
>> assert(__FUNCTION__, !lhs.overlaps(rhs));
>> assert(__FUNCTION__, !rhs.overlaps(lhs));
>> }
>> {
>> Activity lhs(15, 20);
>> Activity rhs(10, 15);
>> assert(__FUNCTION__, !lhs.overlaps(rhs));
>> assert(__FUNCTION__, !rhs.overlaps(lhs));
>> }
>> }
>>
>> void testSchedule()
>> {
>> {
>> Schedule today;
>> today.addActivity(Activity{360, 480});
>> today.addActivity(Activity{420, 540});
>> today.addActivity(Activity{600, 660});
>> assert(__FUNCTION__, (today.getSchedule() == "JCJ"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 1440});
>> today.addActivity(Activity{1, 3});
>> today.addActivity(Activity{2, 4});
>> assert(__FUNCTION__, (today.getSchedule() == "IMPOSSIBLE"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{99, 150});
>> today.addActivity(Activity{1, 100});
>> today.addActivity(Activity{100, 301});
>> today.addActivity(Activity{2, 5});
>> today.addActivity(Activity{150, 250});
>> assert(__FUNCTION__, (today.getSchedule() == "JCCJJ"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{720, 1440});
>> assert(__FUNCTION__, (today.getSchedule() == "JJ"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{0, 720});
>> assert(__FUNCTION__, (today.getSchedule() == "JC"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{0, 500});
>> assert(__FUNCTION__, (today.getSchedule() == "JC"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{300, 720});
>> today.addActivity(Activity{500, 720});
>> assert(__FUNCTION__, (today.getSchedule() == "JC"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{721, 1440});
>> assert(__FUNCTION__, (today.getSchedule() == "JJ"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{720, 900});
>> today.addActivity(Activity{900, 1440});
>> assert(__FUNCTION__, (today.getSchedule() == "JJ"));
>> }
>> }
>>
>> void testSortedSchedule()
>> {
>> {
>> Schedule today;
>> today.addActivity(Activity{360, 480});
>> today.addActivity(Activity{420, 540});
>> today.addActivity(Activity{600, 660});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JCJ"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 1440});
>> today.addActivity(Activity{1, 3});
>> today.addActivity(Activity{2, 4});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "IMPOSSIBLE"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{99, 150});
>> today.addActivity(Activity{1, 100});
>> today.addActivity(Activity{100, 301});
>> today.addActivity(Activity{2, 5});
>> today.addActivity(Activity{150, 250});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JCCJC"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{720, 1440});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JJ"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{0, 720});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JC"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{0, 500});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JC"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{300, 720});
>> today.addActivity(Activity{500, 720});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JC"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{0, 720});
>> today.addActivity(Activity{721, 1440});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JJ"));
>> }
>> {
>> Schedule today;
>> today.addActivity(Activity{720, 900});
>> today.addActivity(Activity{900, 1440});
>> today.sortActivities();
>> assert(__FUNCTION__, (today.getSchedule() == "JJ"));
>> }
>> }
>>
>> int main()
>> {
>> // testActivity();
>> // testSchedule();
>> // testSortedSchedule();
>>
>> size_t tests {0};
>> std::cin >> tests;
>>
>> for (size_t test = 1; test <= tests; ++test)
>> {
>> size_t numActivities {0};
>> std::cin >> numActivities;
>>
>> Schedule today;
>> for (size_t i = 0; i < numActivities; ++i)
>> {
>> int start {0};
>> int end {0};
>> std::cin >> start >> end;
>> today.addActivity(Activity{start, end});
>> }
>> // today.sortActivities();
>> std::cout << "Case #" << test << ": " << today.getSchedule() << std
>> ::endl;
>> }
>> return 0;
>> }
>>
>> Also, when I sorted the activities by Start Time the Google System didn't
>> let to pass even Sample Test cases.
>> I checked the Output requirements and found that any valid result can be
>> outputted.
>>
>> Please point me the reason!
>>
>
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