백준 2741번: N 찍기

import java.io.*;

class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(System.out));
        StringBuffer sb = new StringBuffer();
        int n = Integer.parseInt(br.readLine());
        for (int i = 1; i <= n; i++) {
            sb.append(i).append("\n");
        }
        writer.write(sb.toString());
        writer.flush();
        writer.close();
    }
}