题解 | #牛牛的短信#

int main()
{
	int a;
	int arr[100] = { 0 };
	int b = 0;
	double sum = 0.0;
	int c = 0;

	scanf("%d ", &a);

	for (;(scanf("%d", &arr[b])) != EOF && c < a;)
	{
		if (arr[b] <= 60)
		{
			sum += 0.1;
		}
		else
		{
			sum += 0.2;
		}
		c++;
	}

	printf("%.1f", sum);
	return 0;
}