CSES - Datatähti 2016 alku - Results
Submission details
Task:Lennot
Sender:rxz9000
Submission time:2015-10-03 04:15:33
Language:Java
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.18 s1details
#20.19 s1details
#3ACCEPTED0.18 s1details
#40.17 s1details
#50.17 s1details
#6--2details
#7--2details
#8--2details
#9--2details
#100.21 s2details
#11--3details
#12--3details
#13--3details
#14--3details
#15--3details
#16--3details
#17--3details

Code

import java.util.*;

public class LennotTehtava {

    public static void main(String[] args) {
        IO io = new IO();

        int numberOfCities = io.nextInt();
        int numberOfFlights = io.nextInt();

        HashMap<Integer, HashMap<Integer, Integer>> flights = new HashMap<>();

        for (int i = 0; i < numberOfFlights; i++) {
            int from = io.nextInt();
            if (!flights.containsKey(from)) {
                flights.put(from, new HashMap<Integer, Integer>());
            }
            int to = io.nextInt();
            int cost = io.nextInt();
            flights.get(from).put(to, cost);
        }
        
        LinkedList visitedCities = new LinkedList();
        visitedCities.add(1);
        System.out.println(routeCost(flights, visitedCities, 1, numberOfCities, 0, false));
    }

    public static long routeCost(
            HashMap<Integer, HashMap<Integer, Integer>> flights,
            LinkedList visitedCities,
            int currentCity,
            int destination,
            long currentCost,
            boolean free) {

        if (currentCity == destination) {
            visitedCities.removeLast();
            return currentCost;
        }

        long minimumCost = Long.MAX_VALUE;

        for (Integer nextCity : flights.get(currentCity).keySet()) {
            long totalCost = currentCost;
            if (visitedCities.contains(nextCity)) {
                continue;
            }
            visitedCities.add(nextCity);
            if (free) {
                totalCost += routeCost(flights, visitedCities, nextCity,
                    destination, 0, false);
            } else {
                totalCost += routeCost(flights, visitedCities, nextCity,
                    destination, flights.get(currentCity).get(nextCity), true);
            }

            if (totalCost < minimumCost) {
                minimumCost = totalCost;
            }
        }
        
        visitedCities.removeLast();
        return minimumCost;
    }
}

Test details

Test 1

Group: 1

Verdict:

input
10 20
2 1 3
7 6 4
1 6 7
1 6 1
...

correct output
8

user output
10

Test 2

Group: 1

Verdict:

input
10 20
4 3 10
1 10 9
3 4 10
2 6 7
...

correct output
9

user output
(empty)

Error:
Exception in thread "main" java.lang.NullPointerException
	at LennotTehtava.routeCost(LennotTehtava.java:44)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.main(LennotTehtava.java:26)

Test 3

Group: 1

Verdict: ACCEPTED

input
10 20
5 7 4
6 1 1
7 3 8
8 4 2
...

correct output
8

user output
8

Test 4

Group: 1

Verdict:

input
10 20
1 6 2
5 3 3
7 3 6
5 6 2
...

correct output
13

user output
14

Test 5

Group: 1

Verdict:

input
10 20
10 8 5
2 4 7
9 4 7
9 4 1
...

correct output
4

user output
(empty)

Error:
Exception in thread "main" java.lang.NullPointerException
	at LennotTehtava.routeCost(LennotTehtava.java:44)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.main(LennotTehtava.java:26)

Test 6

Group: 2

Verdict:

input
1000 2000
91 828 365044406
17 984 445675537
251 852 100987451
907 487 58830088
...

correct output
11893353673

user output
(empty)

Test 7

Group: 2

Verdict:

input
1000 2000
722 939 530579090
404 606 268877348
133 750 760086153
506 46 582310443
...

correct output
30248963445

user output
(empty)

Test 8

Group: 2

Verdict:

input
1000 2000
340 237 43690066
217 141 453160975
744 202 639037814
605 926 404985542
...

correct output
3126797692

user output
(empty)

Test 9

Group: 2

Verdict:

input
1000 2000
88 312 190442306
480 402 411574469
29 901 397491243
636 459 323246996
...

correct output
18416073173

user output
(empty)

Test 10

Group: 2

Verdict:

input
1000 2000
333 228 718389176
796 286 323493090
743 43 751876815
128 554 175625940
...

correct output
6399349335

user output
(empty)

Error:
Exception in thread "main" java.lang.NullPointerException
	at LennotTehtava.routeCost(LennotTehtava.java:44)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeCost(LennotTehtava.java:54)
	at LennotTehtava.routeCost(LennotTehtava.java:51)
	at LennotTehtava.routeC

Test 11

Group: 3

Verdict:

input
100000 200000
28264 92686 186865663
92570 33956 925976418
87377 71249 644757113
16701 81203 922125505
...

correct output
518249578675

user output
(empty)

Test 12

Group: 3

Verdict:

input
100000 200000
95740 71482 846654568
44131 16806 670712211
3967 49254 424174139
39369 53007 830346557
...

correct output
920862321580

user output
(empty)

Test 13

Group: 3

Verdict:

input
100000 200000
79947 25489 71554257
59184 25577 328436360
82945 73554 4942918
22380 92385 874250042
...

correct output
399407698440

user output
(empty)

Test 14

Group: 3

Verdict:

input
100000 200000
31139 12960 580545990
27744 95556 747296719
46969 42578 840321561
5638 28960 513805324
...

correct output
165235287505

user output
(empty)

Test 15

Group: 3

Verdict:

input
99993 199980
1 3 1
3 2 1
1 4 1
4 2 1
...

correct output
2

user output
(empty)

Test 16

Group: 3

Verdict:

input
100000 149994
93867 98509 1755709
85029 99843 1347591
10305 35305 6447
75638 80585 1829972
...

correct output
1124960

user output
(empty)

Test 17

Group: 3

Verdict:

input
100000 200000
70413 71496 49
15963 40963 18635
81291 89420 1850028
8848 33848 17316
...

correct output
110298

user output
(empty)