小北的身高是1.65米。班上有n个小朋友，小北想和身高最接近自己的人交朋友。如果有多个小朋友与小北的身高差相同，小北想和其中身高较矮的第一个小朋友做朋友。横线处应该填入的代码是（ ）。

n = int(input("请输入小朋友的人数: "))
target = 1.65
best_height = 0.0
min_diff = 100.0 # 假设身高差不会超过100

for i in range(n):
    h = float(input(f"请输入第 {i + 1} 个小朋友的身高: "))

    if h > target:
        diff = h - target
    else:
        diff = target - h

    if diff < min_diff:
        min_diff = diff
        best_height = h
    elif diff == min_diff:
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print("小北的朋友身高为:", best_height)