#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
int A,B,C,D;
cin>>A>>B>>C>>D;
if(B>C&&D>A&&C+D>A+B&&C>0&&D>0&&A%2==0){
cout<<"Valores aceitos"<<endl;
}else{
cout<<"Valores nao aceitos"<<endl;
}
return 0;
}