CSES - Datatähti 2016 alku - Results
Submission details
Task:Lennot
Sender:Hansuzu
Submission time:2015-09-30 10:37:15
Language:C++
Status:READY
Result:61
Feedback
groupverdictscore
#1ACCEPTED24
#2ACCEPTED37
#30
Test results
testverdicttimegroup
#1ACCEPTED0.06 s1details
#2ACCEPTED0.06 s1details
#3ACCEPTED0.06 s1details
#4ACCEPTED0.05 s1details
#5ACCEPTED0.05 s1details
#6ACCEPTED0.06 s2details
#7ACCEPTED0.05 s2details
#8ACCEPTED0.06 s2details
#9ACCEPTED0.06 s2details
#10ACCEPTED0.06 s2details
#110.30 s3details
#120.31 s3details
#130.31 s3details
#140.32 s3details
#15ACCEPTED0.09 s3details
#16ACCEPTED0.12 s3details
#17ACCEPTED0.17 s3details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i=0; i<q.size(); ++i){
                  ^
input/code.cpp:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j=0; j<lt[c].size(); ++j){
                    ^

Code

#include <iostream>
#include <vector>
#define F first
#define S second
using namespace std;
int n, m;

long long mn[101010][2];
vector<pair<int, int> > lt[101010];




int main(){
  ios_base::sync_with_stdio(0); cin.tie(0);
  for (int i=0; i<101010; ++i) for (int j=0; j<2; ++j) mn[i][j]=2000000000000000LL;
  
  
  cin >> n >> m;
  for (int i=0; i<m; ++i){
    int a, b, h;
    cin >> a >> b >> h;
    lt[a].push_back(make_pair(b, h));
  }
  
  vector<pair<int, long long> > q; 
  q.push_back(make_pair(1, 0));
  for (int i=0; i<q.size(); ++i){
    int c=q[i].F;
    int p=1;
    if (c<0){ c=-c; p=-1;}
    long long h=q[i].S;
    if (mn[c][(p+1)/2]<=h || h>=min(mn[n][0], mn[n][1])) continue;
    mn[c][(p+1)/2]=h;
    for (int j=0; j<lt[c].size(); ++j){
      long long h2=lt[c][j].S*(p+1)/2+h;
      if (h2<mn[lt[c][j].F][(-p+1)/2] && h2<min(mn[n][0], mn[n][1])) q.push_back(make_pair(-lt[c][j].F*p, lt[c][j].S*(p+1)/2+h));
    }
  }
  cout << min(mn[n][0], mn[n][1]) << "\n";
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

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

correct output
8

user output
8

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: 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: ACCEPTED

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

correct output
13

user output
13

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: ACCEPTED

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

correct output
11893353673

user output
11893353673

Test 7

Group: 2

Verdict: ACCEPTED

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

correct output
30248963445

user output
30248963445

Test 8

Group: 2

Verdict: ACCEPTED

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

correct output
3126797692

user output
3126797692

Test 9

Group: 2

Verdict: ACCEPTED

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

correct output
18416073173

user output
18416073173

Test 10

Group: 2

Verdict: ACCEPTED

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

correct output
6399349335

user output
6399349335

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: ACCEPTED

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

correct output
2

user output
2

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