taboo

最新推荐文章于 2021-10-09 16:57:55 发布

原创最新推荐文章于 2021-10-09 16:57:55 发布 · 970 阅读

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#import #string #class

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class tabooString {
   public static void main(String[] args) {
       BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
       double revCnt= 0;
       int result =0;
       try {
           revCnt= Double.valueOf(br.readLine());
           if (revCnt<3) {
               result=(int)Math.pow(3, revCnt);
           }
           if (revCnt == 3) {
               result=(int)(Math.pow(3, revCnt) - 6);
           }
           if (revCnt == 4 ) {
               result=(int)(Math.pow(3, revCnt) - Math.pow(6, revCnt-2));
           }
           if (revCnt > 4) {
               result=(int)((Math.pow(3, revCnt)-(Math.pow(6, revCnt-3)+12)));

           }
           System.out.println( result );
       } catch (IOException e) {
           e.printStackTrace();
       }
   }
}