#include <iostream>
using namespace std;
int main()
{
int a,b,c;
long long d;
cin >> a >> b >> c >> d;
if(a+b-c==d)
{
cout <<"Yes";
}
else if(a-b+c==d)
{
cout <<"Yes";
}
else if(a+b*c==d)
{
cout <<"Yes";
}
else if(a*b+c==d)
{
cout <<"Yes";
}
else if(a-b*c==d)
{
cout <<"Yes";
}
else if(a*b-c==d)
{
cout <<"Yes";
}
else {
cout <<"No";
}
}
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