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HIIT Open 2016

Start:2016-05-28 11:00:00
End:2016-05-28 16:00:00
 

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CSES - HIIT Open 2016 - Results
History
2016-05-28 11:17:52
Task:Interesting number
Sender:Verto
Submission time:2016-05-28 11:17:52
Language:Python2
Status:READY
Result:ACCEPTED

Test results

testverdicttime (s)
#1ACCEPTED0.06 / 1.00details
#2ACCEPTED0.21 / 1.00details

Code

import sys

primes = range(5,1001)
found_primes = [2,3]
for i in primes:
	for j in found_primes:
		is_prime = True
		if i % j == 0:
			is_prime = False
			break
		if j*j > i:
			break
	if is_prime:
		found_primes.append(i)

def is_prime(k):
	return k in found_primes

def is_palindrome(k):
	a = str(k)
	return a == a[::-1]

t = int(sys.stdin.readline())
for i in range(t):
	n = int(sys.stdin.readline())
	vals = sys.stdin.readline().split()
	vals = map(int, vals)
	for val in vals:
		if is_prime(val) and is_palindrome(val):
			print val
			break

Test details

Test 1

Verdict: ACCEPTED

input
1000
9
300 988 956 931 116 3 386 202 ...
8
786 850 344 607 258 3 564 795
7
181 300 325 705 512 972 207
6
919 257 176 534 398 536
9
324 811 467 265 688 191 642 17...
5
7 691 423 512 506
5
705 191 300 735 966
10
134 709 407 211 518 815 444 11...
9
794 476 394 244 671 181 466 92...
6
...
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correct output
3
3
181
919
191
7
191
353
181
929
787
727
7
373
313
2
353
383
787
919
...
view   save

user output
3
3
181
919
191
7
191
353
181
929
787
727
7
373
313
2
353
383
787
919
...
view   save

Test 2

Verdict: ACCEPTED

input
1
100000
72 247 605 249 10 422 594 490 ...
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correct output
191
view   save

user output
191
view   save