CSES - Datatähti 2016 alku - Results
Submission details
Task:Lennot
Sender:ollpu
Submission time:2015-10-03 21:42:07 +0300
Language:Python2
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.06 s1details
#2ACCEPTED0.05 s1details
#3ACCEPTED0.05 s1details
#4ACCEPTED0.06 s1details
#5ACCEPTED0.05 s1details
#60.41 s2details
#70.90 s2details
#80.62 s2details
#90.69 s2details
#100.72 s2details
#110.38 s3details
#120.39 s3details
#130.40 s3details
#140.39 s3details
#150.40 s3details
#160.40 s3details
#170.38 s3details

Code

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
from sys import stdin
from sys import stdout

maxint = sys.maxint

def readline():
    return stdin.readline().strip()

line1 = readline().split(' ')
# Kaupunkeja
n = int(line1[0])
# Lentoja
m = int(line1[1])

class Flight:
    def __init__(self, a, b, h):
        self.fr = a
        self.to = b
        self.price = int(h)

class City:
    def __init__(self, aid):
        self.total_price = maxint
        self.even = True
        self.calculated = False
        self.con_fr = []
        self.con_to = []
        self.aid = aid
        self.remove = False
    def __eq__(self, other):
        return (isinstance(other, self.__class__)
            and self.aid == other.aid)


flights = []
cities = []
for c in xrange(n):
    cities.append(City(c))

uncalculated = list(cities)

for f in xrange(m):
    row = readline().split(' ')
    flight = Flight(cities[int(row[0])-1], cities[int(row[1])-1], row[2])
    flights.append(flight)
    flight.fr.con_to.append(flight)
    flight.to.con_fr.append(flight)


start = cities[0]
end = cities[-1]
start.total_price = 0



for repeat in xrange(n-1):
    for city in cities:
        if city.total_price != maxint:
            for flight in city.con_to:
                city_to = flight.to
                if city.even:
                    new_value = city.total_price + flight.price
                else:
                    new_value = city.total_price
                if new_value < city_to.total_price:
                    city_to.total_price = new_value
                    city_to.even = not city.even

print(end.total_price)
    # for flight in current.con_to:
    #     city = flight.to
    #     if not city.calculated:
    #         if current.even_price_set:
    #             new_odd_price = current.total_price_even + flight.price
    #             if new_odd_price < city.total_price_odd:
    #                 city.total_price_odd = new_odd_price
    #                 city.odd_price_set = True
    #
    #         if current.odd_price_set:
    #             new_even_price = current.total_price_odd
    #             if new_even_price < city.total_price_even:
    #                 city.total_price_even = new_even_price
    #                 city.even_price_set = True
    # uncalculated.remove(current)
    # current.calculated = True
    # if current == end:
    #     found = True
    #     print(min(current.total_price_even, current.total_price_odd))
    #     # if current.total_price_even < maxint and current.total_price_odd < maxint:
    #     #     raise
    #     break
    #
    # smallest_price = maxint
    # for city in reversed(uncalculated):
    #     # cityprice = city.total_price_even + city.total_price_odd
    #     cityprice = min(city.total_price_even, city.total_price_odd)
    #     if cityprice < smallest_price:
    #         smallest = city
    #         smallest_price = cityprice
    #
    # current = smallest

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
13

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:

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

correct output
11893353673

user output
13896193050

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
35112573517

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
4174474603

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
22341375308

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
6862980047

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)