CSES - Datatähti 2023 alku

Submission details
Task:	Sadonkorjuu
Sender:	chaotic
Submission time:	2022-11-02 22:19:10 +0200
Language:	C++ (C++17)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	RUNTIME ERROR	0
#2	RUNTIME ERROR	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 2	details
#2	ACCEPTED	0.00 s	1, 2	details
#3	ACCEPTED	0.00 s	1, 2	details
#4	ACCEPTED	0.00 s	1, 2	details
#5	ACCEPTED	0.00 s	1, 2	details
#6	RUNTIME ERROR	0.00 s	1, 2	details
#7	RUNTIME ERROR	0.03 s	2	details
#8	RUNTIME ERROR	0.00 s	1, 2	details
#9	RUNTIME ERROR	0.03 s	2	details
#10	RUNTIME ERROR	0.00 s	1, 2	details
#11	RUNTIME ERROR	0.03 s	2	details
#12	ACCEPTED	0.10 s	2	details
#13	ACCEPTED	0.10 s	2	details
#14	ACCEPTED	0.10 s	2	details
#15	ACCEPTED	0.00 s	1, 2	details
#16	ACCEPTED	0.00 s	1, 2	details
#17	ACCEPTED	0.00 s	1, 2	details
#18	ACCEPTED	0.00 s	1, 2	details
#19	ACCEPTED	0.00 s	1, 2	details
#20	ACCEPTED	0.00 s	1, 2	details
#21	ACCEPTED	0.09 s	2	details
#22	ACCEPTED	0.09 s	2	details
#23	ACCEPTED	0.09 s	2	details
#24	ACCEPTED	0.00 s	1, 2	details
#25	ACCEPTED	0.09 s	2	details
#26	ACCEPTED	0.00 s	1, 2	details
#27	ACCEPTED	0.09 s	2	details
#28	ACCEPTED	0.00 s	1, 2	details
#29	ACCEPTED	0.09 s	2	details
#30	ACCEPTED	0.00 s	1, 2	details
#31	ACCEPTED	0.09 s	2	details

Compiler report

input/code.cpp:15:1: warning: multi-line comment [-Wcomment]
   15 | //#define assert(x)                                                        \
      | ^
input/code.cpp: In function 'int main()':
input/code.cpp:133:20: warning: 'root' may be used uninitialized [-Wmaybe-uninitialized]
  133 |     root->calc_down();
      |     ~~~~~~~~~~~~~~~^~

Code

#include <algorithm>
#include <cassert>
#include <chrono>
#include <climits>
#include <iostream>
#include <memory>
#include <numeric>
#include <sstream>
#include <thread>
#include <vector>

using ll = long long;

//#undef assert
//#define assert(x)                                                        \
//    do {                                                                 \
//        if (!(x)) std::this_thread::sleep_for(std::chrono::seconds(10)); \
//    } while (0);

struct City {
    City* left  = nullptr;
    City* right = nullptr;
    ll left_dist;
    ll right_dist;

    bool port;

    ll shortest_down = LLONG_MAX;
    bool has_parent  = false;

    void connect(City& o, ll dist) {
        assert(o.has_parent == false);
        if (!left) {
            left      = &o;
            left_dist = dist;
        } else {
            assert(!right);
            right      = &o;
            right_dist = dist;
        }
        o.has_parent = true;
    }

    void calc_down() {
        if (port) {
            shortest_down = 0;
            if (left) left->calc_down();
            if (right) right->calc_down();
            return;
        }
        ll l = LLONG_MAX;
        ll r = LLONG_MAX;
        if (left) {
            left->calc_down();
            l = left->shortest_down;
        }
        if (right) {
            right->calc_down();
            r = right->shortest_down;
        }
        auto add = [](ll a, ll b) {
            if (a == LLONG_MAX || b == LLONG_MAX) return LLONG_MAX;
            return a + b;
        };
        shortest_down = std::min(add(l, left_dist), add(r, right_dist));
    }

    ll shortest = LLONG_MAX;
    void calc_shortest(ll up_dist, City* p) {
        if (!p) {
            shortest = shortest_down;
        } else if (port) {
            shortest = 0;
        } else {
            auto add = [](ll a, ll b) {
                if (a == LLONG_MAX || b == LLONG_MAX) return LLONG_MAX;
                return a + b;
            };
            ll l     = left ? add(left->shortest_down, left_dist) : LLONG_MAX;
            ll r     = right ? add(right->shortest_down, right_dist) : LLONG_MAX;
            shortest = std::min(std::min(l, r), add(p->shortest, up_dist));
        }
        if (left) left->calc_shortest(left_dist, this);
        if (right) right->calc_shortest(right_dist, this);
    }
};

int main() {
    std::cin.sync_with_stdio(false);
    auto& stream = std::cin;

    //    std::stringstream ss{
    //        R"(6
    //        1 1 0 0 1 1
    //        1 2 20
    //        2 3 30
    //        2 5 50
    //        3 6 60
    //        1 4 10
    //        )"
    //    };
    //    ss.copyfmt(std::cin);
    //    ss.exceptions(ss.badbit | ss.failbit);
    //    auto& stream = ss;

    int n;
    stream >> n;

    std::vector<City> cities;
    cities.reserve(n);
    for (int i = 0; i < n; ++i) {
        //
        int v;
        stream >> v;
        City nw;
        nw.port = v == 0 ? true : false;
        cities.push_back(nw);
    }
    for (int i = 0; i < n - 1; ++i) {
        int a, b, c;
        stream >> a >> b >> c;
        cities[a - 1].connect(cities[b - 1], c);
    }

    City* root;
    for (auto& c : cities) {
        if (c.has_parent == false) {
            root = &c;
            break;
        }
    }
    //    std::cout << root << "\n";
    root->calc_down();
    root->calc_shortest(LLONG_MAX, nullptr);
    //    std::cout << root->shortest_down << "\n";
    ll sum = 0;
    for (auto& c : cities) {
        //        std::cout << c.shortest << "\n";
        sum += c.shortest;
    }
    std::cout << sum << "\n";
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
`1 0` view save

correct output
`0` view save

user output
`0` view save

Test 2

Group: 1, 2

Verdict: ACCEPTED

input
`5 0 0 0 0 0 1 2 1 2 3 2 3 4 3 ...` view save

correct output
`0` view save

user output
`0` view save

Test 3

Group: 1, 2

Verdict: ACCEPTED

input
`4 1 0 1 1 1 2 10 2 3 20 2 4 30` view save

correct output
`60` view save

user output
`60` view save

Test 4

Group: 1, 2

Verdict: ACCEPTED

input
`5 0 1 1 1 0 1 2 10 2 3 20 3 4 30 ...` view save

correct output
`80` view save

user output
`80` view save

Test 5

Group: 1, 2

Verdict: ACCEPTED

input
`5 0 1 0 1 1 1 2 1 2 3 5 3 4 3 ...` view save

correct output
`6` view save

user output
`6` view save

Test 6

Group: 1, 2

Verdict: RUNTIME ERROR

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`5506363` view save

user output
(empty)

Error:

code: input/code.cpp:32: void City::connect(City&, ll): Assertion `o.has_parent == false'...

Test 7

Group: 2

Verdict: RUNTIME ERROR

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`1795118520` view save

user output
(empty)

Error:

code: input/code.cpp:32: void City::connect(City&, ll): Assertion `o.has_parent == false'...

Test 8

Group: 1, 2

Verdict: RUNTIME ERROR

input
`1000 0 0 1 0 1 1 0 1 0 1 1 0 0 0 1 ...` view save

correct output
`293576` view save

user output
(empty)

Error:

code: input/code.cpp:32: void City::connect(City&, ll): Assertion `o.has_parent == false'...

Test 9

Group: 2

Verdict: RUNTIME ERROR

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`816932444` view save

user output
(empty)

Error:

code: input/code.cpp:32: void City::connect(City&, ll): Assertion `o.has_parent == false'...

Test 10

Group: 1, 2

Verdict: RUNTIME ERROR

input
`1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`3089` view save

user output
(empty)

Error:

code: input/code.cpp:32: void City::connect(City&, ll): Assertion `o.has_parent == false'...

Test 11

Group: 2

Verdict: RUNTIME ERROR

input
`200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`40839` view save

user output
(empty)

Error:

code: input/code.cpp:32: void City::connect(City&, ll): Assertion `o.has_parent == false'...

Test 12

Group: 2

Verdict: ACCEPTED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`5683983203973` view save

user output
`5683983203973` view save

Test 13

Group: 2

Verdict: ACCEPTED

input
`200000 0 1 1 1 1 1 1 0 0 0 1 1 0 1 0 ...` view save

correct output
`58572993` view save

user output
`58572993` view save

Test 14

Group: 2

Verdict: ACCEPTED

input
`200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`32755` view save

user output
`32755` view save

Test 15

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`126238345` view save

user output
`126238345` view save

Test 16

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 0 0 1 0 1 1 1 0 0 1 0 1 1 0 ...` view save

correct output
`278678` view save

user output
`278678` view save

Test 17

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 ...` view save

correct output
`34929` view save

user output
`34929` view save

Test 18

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`1543963` view save

user output
`1543963` view save

Test 19

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`39606` view save

user output
`39606` view save

Test 20

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 0 1 0 1 0 0 0 0 1 1 0 0 0 1 ...` view save

correct output
`321598` view save

user output
`321598` view save

Test 21

Group: 2

Verdict: ACCEPTED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`978670626` view save

user output
`978670626` view save

Test 22

Group: 2

Verdict: ACCEPTED

input
`200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`375218` view save

user output
`375218` view save

Test 23

Group: 2

Verdict: ACCEPTED

input
`200000 1 1 1 1 0 0 0 0 0 1 0 1 0 1 1 ...` view save

correct output
`60422556` view save

user output
`60422556` view save

Test 24

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`291990` view save

user output
`291990` view save

Test 25

Group: 2

Verdict: ACCEPTED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`59607954` view save

user output
`59607954` view save

Test 26

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`990` view save

user output
`990` view save

Test 27

Group: 2

Verdict: ACCEPTED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`199982` view save

user output
`199982` view save

Test 28

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`7987` view save

user output
`7987` view save

Test 29

Group: 2

Verdict: ACCEPTED

input
`200000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`3137875` view save

user output
`3137875` view save

Test 30

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`4657693` view save

user output
`4657693` view save

Test 31

Group: 2

Verdict: ACCEPTED

input
`200000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`1652889357` view save

user output
`1652889357` view save

Datatähti 2023 alku

Sadonkorjuu

Compiler report

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Test 26

Test 27

Test 28

Test 29

Test 30

Test 31

Tasks

Submissions (chaotic)