#include <bits/stdc++.h>
using namespace std;
using ll = __int128;
using i64 = int64_t;
const ll INF = 1e18;
const int SZ = 2e5+1;
struct Line {
ll m {}, c {};
ll operator()(const ll &x) { return m * x + c; }
};
struct LiChaoTree {
Line v;
LiChaoTree *L = NULL, *R = NULL;
void insert(Line x, ll l, ll r) {
ll m = (l + r) >> 1;
if(v(m) < x(m)) swap(v, x);
if(r - l < 2) return;
x.m > v.m ? (R ? : R = new LiChaoTree)->insert(x, m, r):
(L ? : L = new LiChaoTree)->insert(x, l, m);
}
ll operator()(const ll &x, ll l, ll r) {
if(r - l < 2) return v(x);
ll m = (l + r) >> 1;
return x < m ? max(v(x), L ? (*L)(x, l, m) : 0):
max(v(x), R ? (*R)(x, m, r) : 0);
}
};
i64 N, M, X, W, T, S[SZ], D[SZ], C[SZ];
int main() {
cin.tie(0)->sync_with_stdio(0);
cin >> X >> N >> M >> W >> T;
vector<pair<ll, int>> a(N+M+1);
for(int i = 0; i < N; ++i) {
cin >> S[i];
a[i+0] = {S[i] % T, i};
}
a[N] = {X % T, N};
S[N++] = X;
for(int i = 0; i < M; ++i) {
cin >> D[i] >> C[i];
a[i+N] = {D[i] % T, i + N};
}
sort(begin(a), end(a), [](const auto &i, const auto &j) {
return i.first < j.first;
});
LiChaoTree lct;
ll cost {}, dp {}, cnt {}, ext = ll((X - ll(1)) / T + 1) * ll(W);
for(int i = 1; i <= N + M; ++i) {
int c = a[i-1].second;
if(c < N) {
ll f = (S[c] - ll(1)) / T;
dp = max(dp, cost - f * cnt * ll(W) + lct(f, 0, X + 1));
} else {
c -= N; ++cnt;
ll total = ((X - ll(1)) / T) + (D[c] < (X % T));
ext += total * ll(W);
cost += total * ll(W) - ll(C[c]);
}
lct.insert(Line{cnt * ll(W), dp - cost}, 0, X + 1);
}
cout << int64_t(ext - dp);
}
