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import java.io.*;
import java.util.*;
import java.lang.*;
import java.math.*;
 
public class Main{
    public static void main(String[] args)throws IOException{
	while(true){
	    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	    Long n = Long.parseLong(br.readLine());
	    n--;
	    int idx = 0;
	    while(n > 0){
		idx++;
		if(n % 2 == 1){
		    BigInteger v = new BigInteger("1");
		    for(int i = 0; i < idx; i++)
			v.multiply("3");
		    System.out.println(v);
		}
		n /= 2;
	    }
	}
    }
}
 
 

Main.java:18: error: no suitable method found for multiply(String)
			v.multiply("3");
			 ^
    method BigInteger.multiply(BigInteger) is not applicable
      (argument mismatch; String cannot be converted to BigInteger)
    method BigInteger.multiply(long) is not applicable
      (argument mismatch; String cannot be converted to long)
1 error

Standard output is empty