백준 5단계(2920)

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;
 
public class Main {
    
    public static String check(int[] numArr) {
        String str = "mixed";
        boolean asc = true;
        boolean desc = true;
        for(int i = 1; i <= numArr.length; i++) {
            if(numArr[i - 1] != i) asc = false;
            if(numArr[i - 1] != numArr.length - i + 1) desc = false;
        }
        if(asc) str = "ascending";
        if(desc) str = "descending";
        return str;
    }
    
    public static void main(String[] args) throws Exception{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        
        String input = br.readLine();
        StringTokenizer st = new StringTokenizer(input);
        
        int size = st.countTokens();
        int[] numArr = new int[size];
        
        for(int i = 0; i < size; i++) {
            numArr[i] = Integer.parseInt(st.nextToken());
        }
        bw.write(check(numArr));
        bw.flush();
    }
    public static String check2(int[] input) {
        String result = "mixed";
        int[] ascending = new int[input.length];
        int[] descending = new int[input.length];
        for(int i = 0; i < input.length; i++) {
            ascending[i] = i + 1;
            descending[i] = input.length - i;
        }
        boolean asc = true;
        boolean desc = true;
        for(int i = 0; i < input.length; i ++) {
            if(ascending[i] != input[i]) asc = false;
            if(descending[i] != input[i]) desc = false;
        }
        if(asc) result = "ascending";
        else if(desc) result = "descending";
        return result;
    }
}