求点赞

#include <iostream>
using namespace std;

int main(){
string s;
string s1,s2;
cin>>s;
for(int i=0;i<s.size();i++){
if(i%2==0){
s1=s1+s[i];
}else{
s2=s2+s[i];
}
}
if(s2>s1){
cout<<s2<<s1;
}
else if(s2<s1){
cout<<s1<<s2;
}
return 0;
}