#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c=0; cin>>a; b=a; while(b!=0){ c=c*10+b%10; b/=10; } if(c==a){ cout<<"Yes"; return 0; } cout<<"No"; return 0; }

#include <iostream> using namespace std; int main(){ int n,x=0,c; cin>> n; c=n; while(n>0){ x=x*10+n%10; n/=10; } if(x==c){ cout<<"Yes"; } else{ cout<<"No"; } return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ string s; cin>>s; int i=0,j=s.size()-1; while(i<j){ if(s[i]!=s[j]){ cout<<"No"; return 0; } i++; j--; } cout<<"Yes"; return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; /if(n==0){ cout<<"No"; return 0; }0在这里被归为回文数了/ int z=0,m=n; while(n>0){ int x=n%10; z=z*10+x; n/=10; } if(z==m)cout<<"Yes"; else cout<<"No"; return 0; }