预测整条流水线的产出

运行下面的 Python 3 程序，填写结果。

orders = [{"city": "北京", "amount": 120},
          {"city": "上海", "amount": 80},
          {"city": "北京", "amount": 200},
          {"city": "广州", "amount": 150}]
total = 0
for o in orders:
    if o["amount"] >= 100:
        total = total + o["amount"] * 10
print(total)