题解

#include<bits/stdc++.h>
using namespace std;

bool ispa(string x)
{
    string tmp="";
    for (int i=x.size()-1;i>=0;i--)
        tmp+=x[i];
    if (tmp==x)
        return true;
    else
        return false;
}

int main()
{
	string s;
    cin >> s;
    if (ispa(s))
        cout << "Yes";
    else
        cout << "No";
    return 0;
}