class Solution {
int cntOne(int n){
String binary = Integer.toBinaryString(n);
int cnt = 0;
for(char c : binary.toCharArray()){
if(c == '1') cnt++;
}
return cnt;
}
public int solution(int n) {
int cnt = cntOne(n);
while(true){
if(cnt == cntOne(++n)){
return n;
}
}
}
}