题解

#include<bits/stdc++.h>
using namespace std;
int main(){
    string s;
    char a[10001];
    cin>>a;
    int n = strlen(a);
    for(int i=n-1;i>=0;i--)s+=a[i];
    if(s==a) cout<<"Yes";
    else cout<<"No";
    return 0;
}//AC