适合新手的题解--只有if和else

#include<bits/stdc++.h>
using namespace std;
int main(){
    int x,y;
    cin>>x>>y;
    if(y%2!=0){
        cout<<"No";
    }else if(x>=y/2){
        cout<<"No";
    }else if(y==0||x==0){
        cout<<"No";
    }else{
        cout<<"Yes";
    }
    return 0;
}