题解

#include<iostream>
#include<string>
using namespace std;
int main(){
string s1,s2;
cin >> s1;
for (int i = s1.size()-1; i >= 0; i--) {
s2+=s1[i];
}
if(s1==s2){
cout<<"Yes";
}else{
cout<<"No";
}
return 0;
}