#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
using ll = long long;
constexpr ll MOD = 1'000'000'007;

struct Combination{
    using ll = long long;
    const int n;
    // const int MOD = 998244353;
    vector<ll> fac, ifac;
    ll mp(ll a, ll x) const {
        ll res = 1;
        for(; x > 0; x >>= 1){
            if(x&1){
                res *= a; res %= MOD;
            }
            a *= a; a %= MOD;
        }
        return res;
    }
    Combination(int _n = 1000000): n(_n), fac(vector<ll>(_n+1)), ifac(vector<ll>(_n+1)){
        fac[0] = 1;
        for(int i = 1; i <= n; i++) fac[i] = (fac[i-1]*i)%MOD;
        ifac[n] = mp(fac[n], MOD-2);
        for(int i = n; i > 0; i--) ifac[i-1] = (ifac[i]*i)%MOD;
    }

    ll operator()(int n, int k) const {
        if (k < 0 || k > n) return 0;
        return fac[n]*ifac[k]%MOD*ifac[n-k]%MOD;
    }
};

ll modpow(ll a, ll x){
    ll res = 1;
    a %= MOD;
    for(; x > 0; x >>= 1){
        if(x & 1){
            res *= a;
            res %= MOD;
        }
        a *= a;
        a %= MOD;
    }
    return res;
}

ll inv(ll a){
    return modpow(a, MOD-2);
}

int main(){
    int n, m, p; cin >> n >> m >> p;
    vector<int> v(n);
    for(auto &it: v) cin >> it;

    sort(v.begin(), v.end(), greater<int>());
    vector<ll> vtot(n+1, 0);
    for(int i = 0; i < n; i++) vtot[i+1] = vtot[i]+v[i];

    Combination comb{};
    ll ans = 0;
    const ll q = inv(100)*p%MOD;
    const ll r = inv(100)*(100-p)%MOD;
    for(int i = 0; i < n; i++){
        ans += modpow(q, m)*modpow(r, i)%MOD*comb(m+i-1, i)%MOD*vtot[i]%MOD;
        ans %= MOD;
    }
    for(int i = 0; i < m; i++){
        ans += modpow(r, n)*modpow(q, i)%MOD*comb(n+i-1, i)%MOD*vtot[n]%MOD;
        ans %= MOD;
    }
    cout << ans << endl;
    return 0;
}