Submission #2739595

Source Code Expand

# -*- coding: utf-8 -*-


if __name__ == '__main__':
    n = int(input())
    a = list(map(int, input().split()))
    count = 0

    for i in range(len(a)):
        if i == a[a[i] - 1] - 1:
            count += 1

    print(count // 2)

Submission Info

Submission Time
Task B - Friendly Rabbits
User hiro_hiro
Language Python (3.4.3)
Score 200
Code Size 249 Byte
Status AC
Exec Time 71 ms
Memory 14004 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 71 ms 13880 KB
1_02.txt AC 62 ms 13880 KB
1_03.txt AC 63 ms 13880 KB
1_04.txt AC 62 ms 13880 KB
1_05.txt AC 62 ms 14004 KB
1_06.txt AC 62 ms 13812 KB
1_07.txt AC 63 ms 13880 KB
1_08.txt AC 33 ms 7144 KB
1_09.txt AC 53 ms 12316 KB
1_10.txt AC 47 ms 10468 KB
1_11.txt AC 24 ms 4652 KB