class Solution {
public int solution(int n) {
int answer = 0;
String s ="";
while(n>=3){
s+=n%3;
n/=3;
}
if(n==1) s+=1;
else s+=2;
// System.out.println(s);
for(int i=s.length()-1; i>=0; i--){
// System.out.println( Math.pow(3,s.length()-1-i));
answer += (s.charAt(i)-'0') * Math.pow(3,s.length()-1-i);
}
return answer;
}
}