class Solution {
public String solution(String rsp) {
StringBuilder sb = new StringBuilder();
for(int i = 0; i < rsp.length(); i++){
char ch = rsp.charAt(i);
if(ch == '2'){
sb.append("0");
}else if(ch == '0'){
sb.append("5");
}else if(ch == '5'){
sb.append("2");
}
}
System.out.println(sb);
return sb.toString();
}
}