题解 | #牛牛的短信#

//BC154 牛牛的短信
#include<stdio.h>
void Input_arr(int arr[], int n)
{
	for (int i = 0; i < n; i++)
	{
		scanf("%d", &arr[i]);
	}
}

float Fun(int arr[], int n)
{
	float sum = 0.0f;
	for (int i = 0; i < n; i++)
	{
		if (arr[i] > 60)
			sum += 0.2; 
		else
			sum += 0.1; 
	}
	return sum; 
}

int main()
{
	int n = 0; 
	int arr[100] = { 0 }; 
	scanf("%d", &n);
	Input_arr(arr, n);
	float ret = Fun(arr, n);
	printf("%.1f\n", ret);
	return 0; 
}