Submission #3239226

Source Code Expand

N=int(input())
a=[int(i)-1 for i in input().split()]
ans=0
for i in range(N):
  if a[a[i]]==i:
    ans+=1
print(ans//2)

Submission Info

Submission Time
Task B - Friendly Rabbits
User shakayami
Language Python (3.4.3)
Score 200
Code Size 127 Byte
Status AC
Exec Time 69 ms
Memory 13880 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 2940 KB
0_01.txt AC 17 ms 2940 KB
0_02.txt AC 17 ms 2940 KB
1_00.txt AC 17 ms 2940 KB
1_01.txt AC 69 ms 13880 KB
1_02.txt AC 62 ms 13880 KB
1_03.txt AC 65 ms 13880 KB
1_04.txt AC 62 ms 13880 KB
1_05.txt AC 63 ms 13880 KB
1_06.txt AC 62 ms 13880 KB
1_07.txt AC 62 ms 13880 KB
1_08.txt AC 34 ms 7148 KB
1_09.txt AC 54 ms 12008 KB
1_10.txt AC 49 ms 10180 KB
1_11.txt AC 24 ms 4780 KB