Submission #891652

Source Code Expand

n = int(input())
a = list(map(int, input().split()))

r = 0
for i in range(n):
    if i+1 == a[a[i]-1]:
        r += 1
print(r // 2)

Submission Info

Submission Time
Task B - Friendly Rabbits
User nknknk
Language Python (3.4.3)
Score 200
Code Size 141 Byte
Status AC
Exec Time 85 ms
Memory 14008 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 23 ms 3064 KB
0_01.txt AC 23 ms 3064 KB
0_02.txt AC 23 ms 3064 KB
1_00.txt AC 23 ms 3064 KB
1_01.txt AC 85 ms 13812 KB
1_02.txt AC 75 ms 13812 KB
1_03.txt AC 76 ms 13812 KB
1_04.txt AC 76 ms 13812 KB
1_05.txt AC 75 ms 13812 KB
1_06.txt AC 78 ms 14008 KB
1_07.txt AC 77 ms 14008 KB
1_08.txt AC 42 ms 7152 KB
1_09.txt AC 67 ms 12008 KB
1_10.txt AC 59 ms 10564 KB
1_11.txt AC 31 ms 4652 KB