题解

#include<iostream>
using namespace std;
bool huiwen(int n){
    int x=0,y=n;
    while(y!=0){
        x*=10;
        x+=y%10;
        y/=10;
    }
    if(x==n){
        return true;
    }else{
        return false;
    }
}
bool runnian(int n){
    if(n%4==0){
        if(n%100==0){
            return 0;
        }else if(n%400==0){
            return 1;
        }else{
            return 1;
        }
    }else{
        return 0;
    }
}
int main(){
    int n;
    cin>>n;
    if(huiwen(n)==1&&runnian(n)==1){
        cout<<"Yes";
    }else{
        cout<<"No";
    }
    return 0;
}