#include <bits/stdc++.h>
using namespace std;

int main() {
int x1,y1,x2,y2,x3;
cin >> x1 >> y1 >> x2 >> y2 >>x3;
int oac,obc;
oac=x3*y1/2;
obc=x3*y2/2;
if(oac==obc) cout << "Yes";
else cout << "No";
}