#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>
#define pp pair<ll, pii>
const int M = 3e3+1;
ll s[M], n, m, k, a, b, c, t;
int main() {
cin>>n>>m>>k; k-=m;
cin>>a>>b>>c>>t;
for (int i=1; i<=m; ++i) cin>>s[i];
priority_queue<pp> pq;
ll ans=-1;
for (int i=1; i<m; ++i) {
ll tmp=b*(s[i]-1), x=(t-tmp)/a;
if (b*(s[i]-1) > t) continue;
if (s[i]+x >= s[i+1]) x=s[i+1]-s[i]-1;
ans+=x+1;
ll nxt=s[i]+x+1, sz=s[i+1]-nxt;
ll cost=b*(s[i]-1)+(nxt-s[i])*c;
if (cost > t) continue;
ll h=(t-cost)/a+1;
if (min(sz, h) <= 0) continue;
pq.push({min(sz, h), {i, nxt}});
}
while (k-- && !pq.empty()) {
pp g=pq.top(); pq.pop();
ans+=g.first;
ll nxt=g.second.second+g.first, i=g.second.first;
ll cost=b*(s[i]-1)+(nxt-s[i])*c, sz=s[i+1]-nxt;
if (cost > t) continue;
ll h=(t-cost)/a+1;
if (min(sz, h) <= 0) continue;
pq.push({min(sz, h), {i, nxt}});
}
if (b*(s[m]-1) <= t) ++ans;
cout<<ans<<"\n";
}
