题解 | 牛妹数

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n%2==0){
        if(n>50){
            cout<<"yes"<<endl;
        }
        else {
        cout<<"no"<<endl;
        }
    }
    else {
    cout<<"no"<<endl;
    }
    return 0;
}