#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
int h, w;
cin >> h >> w;
int a, b, c;
cin >> a >> b >> c;
int n;
cin >> n;
int x[n + 1], y[n + 1];
for (int i = 1; i <= n; i++) {
cin >> x[i] >> y[i];
}
long long ans = 0;
if (x[1] != x[n] && y[1] != y[n]) {
if (abs(x[1] - x[n]) > abs(y[1] - y[n])) {
ans += c *1ll* abs(y[1] - y[n]);
y[1] = y[n];
} else {
ans += c *1ll* abs(x[1] - x[n]);
x[1] = x[n];
}
}
long long dist = (abs(x[1] - x[n]) + abs(y[1] - y[n]));
if (dist * c < dist * a + b) {
ans += dist * c;
} else {
ans += dist * a + b;
}
cout << ans;
return 0;
}
