Python3 代码

def getUniqueCount(nums, size):
    count = 0
    for i in range (size):
        dup = False;
        for j in range (i):
            if nums[i] == nums[j]:
                dup = True;
                break;
        if dup == False:
            count += 1;
    return count

size = int(input())
nums = [0]*size

nums = list(map(int, input().split()))

print (getUniqueCount(nums, size))