# include<iostream> # include<cstring> # include<cmath> using namespace std; int main() { int l=0,n=0,q=0; char a[1001]; cin>>a; while(a[l]!='\0'){ l++; } for(int i=0;i<=l/2;i++){ if(a[i]!=a[l-1-i]){ cout<<"No"; return 0; } } cout<<"Yes"; return 0; }