[백준 Java] 일반 수학 1 - 2903번: 중앙 이동 알고리즘

 

 

import java.io.*;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int N = Integer.parseInt(br.readLine());
        int M = 2;

        for (int i = 0; i < N; i++) {
            M += (int) (Math.pow(2, i));
        }

        bw.write(String.valueOf(M * M));

        br.close();
        bw.flush();
        bw.close();
    }
}