CSES - Putka Open 2020 – 1/5 - Results
Submission details
Task:Lista
Sender:JiK
Submission time:2020-09-05 02:38:36 +0300
Language:PyPy3
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED21
#2ACCEPTED38
#3ACCEPTED41
Test results
testverdicttimegroup
#1ACCEPTED0.12 s1, 2, 3details
#2ACCEPTED0.12 s1, 2, 3details
#3ACCEPTED0.12 s1, 2, 3details
#4ACCEPTED0.12 s1, 2, 3details
#5ACCEPTED0.12 s1, 2, 3details
#6ACCEPTED0.12 s1, 2, 3details
#7ACCEPTED0.12 s1, 2, 3details
#8ACCEPTED0.12 s1, 2, 3details
#9ACCEPTED0.12 s1, 2, 3details
#10ACCEPTED0.13 s2, 3details
#11ACCEPTED0.13 s2, 3details
#12ACCEPTED0.13 s2, 3details
#13ACCEPTED0.13 s2, 3details
#14ACCEPTED0.13 s2, 3details
#15ACCEPTED0.13 s2, 3details
#16ACCEPTED0.15 s3details
#17ACCEPTED0.16 s3details
#18ACCEPTED0.18 s3details
#19ACCEPTED0.23 s3details
#20ACCEPTED0.18 s3details
#21ACCEPTED0.20 s3details

Code

import sys
import random

#n = int(sys.argv[1])
n = int(sys.stdin.read())

ISPRIME = [False, False] + [True]*(2*n)
for p in range(2,2*n):
 if not ISPRIME[p]:
  continue
 for x in range(p*p, 2*n, p):
  ISPRIME[x] = False


def pen(x):
 return sum(not ISPRIME[x[i] + x[i+1]] for i in range(len(x)-1))

x = list(range(1,n+1))

while True:
 j = 0
 splitpoints = [0]
 for i in range(n-1):
  if not ISPRIME[x[i] + x[i+1]]:
   splitpoints.append(i+1)
 splitpoints.append(n)

 if len(splitpoints)==2:
  break

 splitpoints.append(random.randint(0,n))

 splitpoints = sorted(splitpoints)

 splits = [x[splitpoints[i]:splitpoints[i+1]] for i in range(len(splitpoints)-1)]

 random.shuffle(splits)
 #print (splits)
 x = [i for sublist in splits for i in sublist]

while pen(x) > 0:
 #print (x, pen(x))
 random.shuffle(x)


#print ('"%s",' % (" ".join(map(str, x))))
print (" ".join(map(str, x)))

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
2

correct output
1 2 

user output
1 2

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
3

correct output
1 2 3 

user output
1 2 3

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
4

correct output
1 2 3 4 

user output
1 2 3 4

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
5

correct output
3 4 1 2 5 

user output
3 4 1 2 5

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
6

correct output
3 4 1 2 5 6 

user output
5 6 1 2 3 4

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
7

correct output
3 4 1 2 5 6 7 

user output
7 6 5 2 3 4 1

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
8

correct output
7 6 5 2 1 4 3 8 

user output
3 8 5 6 7 4 1 2

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
9

correct output
7 6 5 2 1 4 3 8 9 

user output
7 6 1 2 3 4 9 8 5

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

input
10

correct output
7 6 5 2 1 4 3 8 9 10 

user output
1 2 3 4 7 6 5 8 9 10

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
19

correct output
17 14 3 8 15 16 13 6 5 2 1 4 9...

user output
15 2 17 12 11 8 5 18 19 4 7 16...

Test 11

Group: 2, 3

Verdict: ACCEPTED

input
56

correct output
55 54 53 50 51 52 49 48 13 28 ...

user output
50 51 52 45 26 27 56 53 14 15 ...

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
70

correct output
67 4 1 2 9 32 35 38 65 66 61 4...

user output
21 22 39 40 43 30 13 46 63 64 ...

Test 13

Group: 2, 3

Verdict: ACCEPTED

input
76

correct output
73 66 61 42 59 54 53 50 51 52 ...

user output
67 64 15 16 13 18 71 38 5 6 7 ...

Test 14

Group: 2, 3

Verdict: ACCEPTED

input
90

correct output
87 86 11 18 29 44 45 16 55 58 ...

user output
72 77 60 53 54 83 84 65 14 75 ...

Test 15

Group: 2, 3

Verdict: ACCEPTED

input
100

correct output
97 96 95 78 25 82 81 56 71 68 ...

user output
47 50 77 26 27 86 87 16 91 88 ...

Test 16

Group: 3

Verdict: ACCEPTED

input
154

correct output
151 6 5 92 137 134 149 84 143 ...

user output
52 145 118 133 16 151 130 127 ...

Test 17

Group: 3

Verdict: ACCEPTED

input
430

correct output
427 426 371 372 367 376 375 35...

user output
79 340 313 300 301 270 197 110...

Test 18

Group: 3

Verdict: ACCEPTED

input
629

correct output
627 404 227 146 83 150 77 74 3...

user output
375 376 123 208 31 306 185 8 7...

Test 19

Group: 3

Verdict: ACCEPTED

input
833

correct output
829 828 793 574 523 516 515 51...

user output
211 268 795 376 45 394 403 240...

Test 20

Group: 3

Verdict: ACCEPTED

input
885

correct output
883 724 723 878 881 726 721 71...

user output
369 370 681 428 429 430 379 14...

Test 21

Group: 3

Verdict: ACCEPTED

input
1000

correct output
997 996 737 884 995 492 991 20...

user output
641 642 571 226 975 956 131 75...