import java.util.*;
public class Main {    
    public static void main(String[] args) {        
        Scanner in = new Scanner(System.in);        
        int t = in.nextInt();        
        int[] org = new int[t];        
        for(int i = 0;i < t;i++) {            
            org[i] = in.nextInt();        
            }                String s = null;        
            for(int j:org) {            
                if(j%5==0) s="yang";            
                else if(j%5==1) s="niu";            
                else if(j%5==2) s="yang";            
                else if(j%5==3) s="niu";            
                else s="niu";                    
            System.out.println(s);    
            }
    }
}
这是青草问题
import java.util.*; public class Main {     public static void main(String[] args) {         Scanner in = new Scanner(System.in);         String s = in.next();         int k = in.nextInt();         int[] mark = new int[26];         for(int i = 0;i < s.length();i++) {             mark[s.charAt(i)-'a']++;         }         Arrays.sort(mark);         for(int i = 0;i < k;i++) {             mark[0]--;             Arrays.sort(mark);         }                  int count =0;         for(int res:mark) {             if(res !=0)                 count = count+res*res;         }         System.out.println(count);     } } 字符串价值