CSES - Datatähti 2016 alku - Results
Submission details
Task:Lennot
Sender:while(false)
Submission time:2015-10-10 22:25:08
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.05 s1details
#2ACCEPTED0.05 s1details
#30.05 s1details
#40.06 s1details
#5ACCEPTED0.05 s1details
#60.05 s2details
#70.06 s2details
#80.05 s2details
#90.06 s2details
#100.05 s2details
#110.29 s3details
#120.32 s3details
#130.27 s3details
#140.30 s3details
#150.20 s3details
#16ACCEPTED0.20 s3details
#17ACCEPTED0.26 s3details

Code

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

long long * PriceE;
long long * PriceO;
int * CityE;
int * CityO;

long long price(int c, bool o);

int main() {
	int n, m = 0;
	cin >> n >> m;
	PriceE = new long long[n];
	PriceO = new long long[n];
	CityE = new int[n];
	CityO = new int[n];

	for (int i = 0; i < n; i++) {
		PriceE[i] = -1;
		PriceO[i] = -1;
		CityE[i] = 0;
		CityO[i] = 0;
	}
	PriceE[0] = 0;

	vector<pair<pair<int, int>, long long>> input;
	for (int i = 0; i < m; i++) {
		int a, b = 0;
		long long h = 0;
		cin >> a >> b >> h;
		a--;
		b--;
		input.push_back(make_pair(make_pair(a, b), h));
	}
	sort(input.begin(), input.end());

	for (int i = 0; i < m; i++) {
		int a = input[i].first.first;
		int b = input[i].first.second;
		long long h = input[i].second;
		if ((PriceE[a] != -1) && ((PriceO[b] == -1) || (price(a, false) + h < price(b, true)))) {
			PriceO[b] = h;
			CityO[b] = a;
		}
		if ((PriceO[a] != -1) && ((PriceE[b] == -1) || (price(a, true) < price(b, false)))) {
			PriceE[b] = 0;
			CityE[b] = a;
		}
	}

	long long Price1 = price(n - 1, false);
	long long Price2 = price(n - 1, true);
	if (Price1 < Price2) {
		cout << Price1;
	}
	else {
		cout << Price2;
	}

	delete[] PriceE;
	delete[] PriceO;
	delete[] CityE;
	delete[] CityO;
	return 0;
}

long long price(int c, bool o) {
	long long output = 0;
	while (c != 0) {
		if (o) {
			output += PriceO[c];
			if (PriceO[c] == -1) {
				return 9223372036854775807LL;
			}
			c = CityO[c];
		}
		else {
			output += PriceE[c];
			if (PriceE[c] == -1) {
				return 9223372036854775807LL;
			}
			c = CityE[c];
		}
		o = !o;
	}
	return output;
}

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
9223372036854775807

Test 2

Group: 1

Verdict: ACCEPTED

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

correct output
9

user output
9

Test 3

Group: 1

Verdict:

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

correct output
8

user output
9223372036854775807

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
9223372036854775807

Test 5

Group: 1

Verdict: ACCEPTED

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

correct output
4

user output
4

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

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
9223372036854775807

Test 16

Group: 3

Verdict: ACCEPTED

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

correct output
1124960

user output
1124960

Test 17

Group: 3

Verdict: ACCEPTED

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

correct output
110298

user output
110298