# include<iostream> # include<cstring> using namespace std; bool b(string a,int l,int r){ int lenn=r-l; for(int i=0;i<lenn/2;i++){ if(a[l+i]!=a[r-i]){ return false; } } return true; } int main(){ string x; cin>>x; int lenn=x.size(); for(int l=0;l<lenn/2;l++){ for(int r=lenn;r<=lenn/2;r++){ if(b(x,l,r))cout<<"Yes"; else cout<<"No"; return 0; } } }