Submission #3623909

Source Code Expand

N = int(input())
A = list(map(int, input().split()))

cnt = 0
for i in range(N):
  if A[A[i]-1] == i+1:
    cnt += 1
    
print(cnt // 2)

Submission Info

Submission Time
Task B - Friendly Rabbits
User mo2
Language Python (3.4.3)
Score 200
Code Size 145 Byte
Status AC
Exec Time 66 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 17 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 66 ms 13812 KB
1_02.txt AC 60 ms 13880 KB
1_03.txt AC 61 ms 13880 KB
1_04.txt AC 60 ms 13880 KB
1_05.txt AC 60 ms 13812 KB
1_06.txt AC 60 ms 13880 KB
1_07.txt AC 60 ms 13812 KB
1_08.txt AC 33 ms 7144 KB
1_09.txt AC 52 ms 12008 KB
1_10.txt AC 46 ms 10596 KB
1_11.txt AC 24 ms 4652 KB