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很普通

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#1 Created at ... [Delete] [Delete and Lock User]
// TODO:
    double average = 0;
    double sum = 0;
    int timer = 0;
    for (int[] arr : scores) {
        for (int n : arr) {
            sum +=n;
            timer++;
        }
    }
    average = sum / timer;
    System.out.println(average);

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