Ambiguous Permutations - PERMUT2

test1.py

def ifAmbiguous(arr,length):
    for i in range(0,length):
        num = i + 1
        pos = arr[i] - 1
        if arr[pos] != num:
            return False
    return True
    
    
while True:
    length = int(input())
    if length == 0:
        break
    arr = [int(x) for x in input().split()]
    if(ifAmbiguous(arr,length)):
        print("ambiguous")
    else:
        print("not ambiguous")