[백준 2292] 벌집

문제

https://www.acmicpc.net/problem/2292

2292번: 벌집

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내가 작성한 코드

import java.io.*;
import java.math.BigInteger;

public class qor2292 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        long N = Long.parseLong(br.readLine());

        int honey = 1;
        int count = 1;
        int i = 1;

        while(honey<N){
            count++;
            honey += 6*i;
            i++;
        }

        bw.write(count+"");
        bw.close();
    }
}