Submission #1165623

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Source Code Expand

number = int(input())
a = list(map(int,input().split()))
count = 0
for i in range(number):
    for j in range(i,number):
        if a[i] ==j+1 and a[j] == i+1:
            count += 1
print(int(count))
    

Submission Info

Judge Result