#include<iostream> using namespace std; int main(){ char a[1001]; cin>>a; int sum_a=0; for(int i=0;;i++){ if(a[i]=='\0'){ sum_a=i; break; } } for(int i=0;i<=sum_a;i++){ if(a[i]!=a[sum_a-i-1]){ cout<<"No"; } } cout<<"Yes"; return 0; }