CSES - Leirikisa 9.12.2021 - Results
Submission details
Task:Lukujono
Sender:xnor
Submission time:2021-12-09 14:43:46 +0200
Language:Python3 (CPython3)
Status:READY
Result:50
Feedback
groupverdictscore
#1ACCEPTED16
#2ACCEPTED34
#30
Test results
testverdicttimegroup
#1ACCEPTED0.02 s1details
#2ACCEPTED0.02 s1details
#3ACCEPTED0.02 s1details
#4ACCEPTED0.02 s1details
#5ACCEPTED0.02 s1details
#6ACCEPTED0.03 s1details
#7ACCEPTED0.02 s1details
#8ACCEPTED0.02 s1details
#9ACCEPTED0.03 s2details
#10ACCEPTED0.03 s2details
#11ACCEPTED0.03 s2details
#12ACCEPTED0.03 s2details
#13ACCEPTED0.03 s2details
#14ACCEPTED0.03 s2details
#15ACCEPTED0.03 s2details
#16ACCEPTED0.03 s2details
#17--3details
#18--3details
#19ACCEPTED0.91 s3details
#20--3details
#21--3details
#22--3details
#23ACCEPTED0.87 s3details
#24--3details

Code

def isqrt_(n):
    return int(n**0.5)

def U(n, memo):
    if n in memo:
        return memo[n]
    s = 0
    root = isqrt_(n)
    for d in range(2, root + 1):
        s += U(n // d, memo)
    for k in range(1, root + 1):
        s += U(k, memo) * (n // k - n // (k + 1))
    if n // root == root:
        s -= U(root, memo)
    memo[n] = s
    return s

n = int(input())
memo = { 0: 0, 1: 1 }
print(U(n, memo))

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
542

correct output
11942

user output
11942

Test 2

Group: 1

Verdict: ACCEPTED

input
929

correct output
29913

user output
29913

Test 3

Group: 1

Verdict: ACCEPTED

input
801

correct output
23460

user output
23460

Test 4

Group: 1

Verdict: ACCEPTED

input
935

correct output
30006

user output
30006

Test 5

Group: 1

Verdict: ACCEPTED

input
998

correct output
33766

user output
33766

Test 6

Group: 1

Verdict: ACCEPTED

input
942

correct output
30490

user output
30490

Test 7

Group: 1

Verdict: ACCEPTED

input
736

correct output
20285

user output
20285

Test 8

Group: 1

Verdict: ACCEPTED

input
930

correct output
29975

user output
29975

Test 9

Group: 2

Verdict: ACCEPTED

input
95404

correct output
90172356

user output
90172356

Test 10

Group: 2

Verdict: ACCEPTED

input
98060

correct output
94687572

user output
94687572

Test 11

Group: 2

Verdict: ACCEPTED

input
69495

correct output
52308390

user output
52308390

Test 12

Group: 2

Verdict: ACCEPTED

input
92197

correct output
85306979

user output
85306979

Test 13

Group: 2

Verdict: ACCEPTED

input
53418

correct output
32957881

user output
32957881

Test 14

Group: 2

Verdict: ACCEPTED

input
97377

correct output
93859995

user output
93859995

Test 15

Group: 2

Verdict: ACCEPTED

input
68065

correct output
50223001

user output
50223001

Test 16

Group: 2

Verdict: ACCEPTED

input
95463

correct output
90201672

user output
90201672

Test 17

Group: 3

Verdict:

input
74323456

correct output
8975396101231

user output
(empty)

Test 18

Group: 3

Verdict:

input
92132055

correct output
13006378374515

user output
(empty)

Test 19

Group: 3

Verdict: ACCEPTED

input
55135704

correct output
5354656932672

user output
5354656932672

Test 20

Group: 3

Verdict:

input
98613338

correct output
14631125716007

user output
(empty)

Test 21

Group: 3

Verdict:

input
75558302

correct output
9238208186405

user output
(empty)

Test 22

Group: 3

Verdict:

input
94968034

correct output
13713914468591

user output
(empty)

Test 23

Group: 3

Verdict: ACCEPTED

input
52163652

correct output
4858985762438

user output
4858985762438

Test 24

Group: 3

Verdict:

input
94830583

correct output
13674294022172

user output
(empty)