CSES - DatatÃ¤hti 2016 alku - Results
 Task: Lennot Sender: AnttiR Submission time: 2015-10-01 00:58:11 Language: Python2 Status: READY Result: 0
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### Code

```highestPrice = 10**10
class Node:
def __init__(self,idn):
self.identifier = idn
self.connections = [] # Tuples of node 's and ints (prices)
self.cheapest = [highestPrice,highestPrice] #even, odd
# If moving from a node's odd cost, the flight is free!

nodes, connections = [int(x) for x in input().split(" ")]
notFoundNodes = []
for ni in range(0,nodes):
newNode = Node(ni)
notFoundNodes.append(newNode)

for ci in range(0,connections):
o,t,p = [int(x) for x in input().split(" ")]
notFoundNodes[o-1].connections.append((notFoundNodes[t-1],p))

notFoundNodes[0].cheapest[0] = 0

cheapestTotalPrice = 0

# Djikstra with a few modifications
while True:
smallestPrice = highestPrice
smallestPriceNode = []

# Find cheapest node
for nd in notFoundNodes:
evenPrice = nd.cheapest[0]
oddPrice = nd.cheapest[1]
if evenPrice == -1:
if oddPrice != -1:
if oddPrice < smallestPrice:
smallestPriceNode = [nd,1]
smallestPrice = oddPrice
elif oddPrice == -1:
if evenPrice != -1:
if evenPrice < smallestPrice:
smallestPriceNode = [nd,0]
smallestPrice = evenPrice
else:
if oddPrice < evenPrice:
if oddPrice < smallestPrice:
smallestPriceNode = [nd,1]
smallestPrice = oddPrice
else:
if evenPrice < smallestPrice:
smallestPriceNode = [nd,0]
smallestPrice = evenPrice

# Update connections of cheapest node
cn = smallestPriceNode[0]
if cn is notFoundNodes[-1]:
cheapestTotalPrice = smallestPrice
break
oe = (smallestPriceNode[1] + 1) % 2
for co in cn.connections:
cost = smallestPrice + co[1] * oe
target = co[0]
if target.cheapest[oe] != -1 and target.cheapest[oe] > cost:
target.cheapest[oe] = cost

# Nullify the current node
cn.cheapest[smallestPriceNode[1]] = -1
if cn.cheapest[0] == -1 and cn.cheapest[1] == -1:
notFoundNodes.remove(cn)

print (cheapestTotalPrice)
```

### 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
(empty)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
10 20
^
SyntaxError: unexpected EOF while parsing```

#### 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:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
10 20
^
SyntaxError: unexpected EOF while parsing```

#### 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
(empty)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
10 20
^
SyntaxError: unexpected EOF while parsing```

#### 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
(empty)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
10 20
^
SyntaxError: unexpected EOF while parsing```

#### 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:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
10 20
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
1000 2000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
1000 2000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
1000 2000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
1000 2000
^
SyntaxError: unexpected EOF while parsing```

#### 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:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
1000 2000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
100000 200000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
100000 200000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
100000 200000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
100000 200000
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
99993 199980
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
100000 149994
^
SyntaxError: unexpected EOF while parsing```

#### 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)

Error:
```Traceback (most recent call last):
File "input/code.py", line 9, in <module>
nodes, connections = [int(x) for x in input().split(" ")]
File "<string>", line 1
100000 200000
^
SyntaxError: unexpected EOF while parsing```