题解 | #KiKi算期末成绩#

using System;
public class Program {
    public static void Main() {
        int[] soc = 字符串数组转换为整型数组(Console.ReadLine().Split(" "));
        Console.WriteLine("{0:0.0}",soc[0]*0.2 + soc[1]*0.1 + soc[2]*0.2 + soc[3]*0.5);
    }

    static int[] 字符串数组转换为整型数组(string[] str)
    {
        int[] i = new int[str.Length];
        int num = 0;
        foreach(var s in str)
        {
            i[num] = int.Parse(s);
            num++;
        }

        return i;
    }
}