CSES - Leirikisa 9.12.2021 - Results
Submission details
Task:Omenat
Sender:okkokko
Submission time:2021-12-09 13:22:20 +0200
Language:Python3 (PyPy3)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.05 s1details
#2ACCEPTED0.04 s1details
#30.05 s1details
#40.05 s1details
#50.05 s1details
#60.05 s1details
#70.05 s2details
#80.05 s2details
#90.05 s2details
#100.05 s2details
#110.05 s2details
#120.05 s2details
#130.07 s3details
#140.07 s3details
#150.07 s3details
#160.07 s3details
#170.07 s3details
#180.07 s3details

Code

import collections
n = int(input())
p = (map(int, input().split()))

q = collections.Counter(map(lambda x: x % 3, p))
total = 0
a0 = q.get(0) or 0
a1 = q.get(1) or 0
a2 = q.get(2) or 0
# print(a0, a1, a2)
total += a0
if a1 < a2:
    a2 -= a1
    total += a1 * 2
    a1 = 0
    total += (a2 // 3)
else:
    a1 -= a2
    total += a2 * 2
    a2 = 0
    total += a1 // 3
print(total)

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
20
34 98 42 72 75 91 76 30 98 7 1...

correct output
20

user output
20

Test 2

Group: 1

Verdict: ACCEPTED

input
20
20 97 85 24 47 57 69 92 21 72 ...

correct output
19

user output
19

Test 3

Group: 1

Verdict:

input
20
36 35 3 15 84 14 24 33 39 27 7...

correct output
18

user output
14

Test 4

Group: 1

Verdict:

input
20
75 87 27 66 14 48 34 1 52 47 7...

correct output
20

user output
18

Test 5

Group: 1

Verdict:

input
20
83 7 54 38 21 51 61 61 14 32 3...

correct output
19

user output
18

Test 6

Group: 1

Verdict:

input
20
76 24 28 45 36 87 81 21 48 43 ...

correct output
18

user output
14

Test 7

Group: 2

Verdict:

input
100
9 48 27 13 12 23 23 35 14 58 2...

correct output
100

user output
94

Test 8

Group: 2

Verdict:

input
100
22 87 66 23 77 17 41 66 31 40 ...

correct output
99

user output
98

Test 9

Group: 2

Verdict:

input
100
90 50 48 47 20 93 36 48 69 2 6...

correct output
98

user output
68

Test 10

Group: 2

Verdict:

input
100
88 39 9 21 51 92 94 75 71 19 8...

correct output
100

user output
94

Test 11

Group: 2

Verdict:

input
100
76 37 49 50 59 68 6 100 48 18 ...

correct output
99

user output
95

Test 12

Group: 2

Verdict:

input
100
78 45 100 25 90 85 33 90 45 54...

correct output
98

user output
68

Test 13

Group: 3

Verdict:

input
100000
460655049 593289072 315159623 ...

correct output
100000

user output
99702

Test 14

Group: 3

Verdict:

input
100000
935436362 204516709 337519402 ...

correct output
99999

user output
99899

Test 15

Group: 3

Verdict:

input
100000
68654915 40061376 215300034 43...

correct output
99998

user output
66744

Test 16

Group: 3

Verdict:

input
100000
435410962 22254303 500625758 6...

correct output
100000

user output
99662

Test 17

Group: 3

Verdict:

input
100000
230562634 84329865 874955526 8...

correct output
99999

user output
99788

Test 18

Group: 3

Verdict:

input
100000
29734968 168066517 710394372 3...

correct output
99998

user output
66602