[백준] 2920번 : 음계 - C#

https://www.acmicpc.net/problem/2920

using System;

class Program
{
    static void Main(string[] args) {
        string[] s=Console.ReadLine().Split(' ');
        int a=int.Parse(s[0]);
        int x=1;
        int y=8;
        int b=0;
        
        if(a==1){
            for(int i=2;i<=8;i++){
                a=int.Parse(s[i-1]);
                x++;
                if(a!=x){
                    Console.Write("mixed");
                    b++;
                    break;
                }
            }
            if(b==0) Console.Write("ascending");
        }
        else if(a==8){
            for(int i=7;i>=1;i--){
                a=int.Parse(s[8-i]);
                y--;
                if(a!=y){
                    Console.Write("mixed");
                    b++;
                    break;
                }
            }
            if(b==0) Console.Write("descending");
        }
        else Console.Write("mixed");
    }
}