Submission #891680

Source Code Expand

n = int(raw_input())
a = map(int, raw_input().split())
a = [None] + a
ans = 0
for i in xrange(1, n+1):
    if a[a[i]] == i:
        ans += 1
print ans/2

Submission Info

Submission Time
Task B - Friendly Rabbits
User honjouanna
Language Python (2.7.6)
Score 200
Code Size 159 Byte
Status AC
Exec Time 77 ms
Memory 11328 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 200 / 200
Status
AC × 3
AC × 15
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt
Case Name Status Exec Time Memory
0_00.txt AC 16 ms 2568 KB
0_01.txt AC 16 ms 2568 KB
0_02.txt AC 16 ms 2568 KB
1_00.txt AC 16 ms 2568 KB
1_01.txt AC 77 ms 11328 KB
1_02.txt AC 71 ms 11328 KB
1_03.txt AC 74 ms 11328 KB
1_04.txt AC 74 ms 11328 KB
1_05.txt AC 71 ms 11328 KB
1_06.txt AC 71 ms 11200 KB
1_07.txt AC 71 ms 11328 KB
1_08.txt AC 36 ms 5804 KB
1_09.txt AC 61 ms 9768 KB
1_10.txt AC 55 ms 8560 KB
1_11.txt AC 24 ms 3972 KB