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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N, M, K;
    cin >> N >> M >> K;
    vector<int> X(K);
    for (int i = 0; i < K; i++) {
        cin >> X[i];
        X[i]--;
    }
    vector<vector<bool>> A(N, vector<bool>(N, false));
    for (int i = 0; i < M; i++) {
        int u, v;
        cin >> u >> v;
        u--, v--;
        A[u][v] = true;
        A[v][u] = true;
    }
    for (int t = 0; t < N; t++) {
        bitset<15> bs_all;
        bs_all = ~bs_all;
        for (int i = 0; i < K; i++) {
            bitset<15> bsi;
            vector<vector<bool>> dp(1 << N, vector<bool>(N, false));
            dp[1 << X[i]][X[i]] = true;
            for (int bit = 0; bit < 1 << N; bit++) {
                for (int u = 0; u < N; u++) {
                    if (!dp[bit][u]) continue;
                    if (u == t) bsi.set(__builtin_popcount(bit) - 1, 1);
                    for (int v = 0; v < N; v++) {
                        if (A[u][v] && (bit >> v & 1) == 0) {
                            dp[bit ^ (1 << v)][v] = true;
                        }
                    }
                }
            }
            bs_all &= bsi;
        }
        if (bs_all.any()) {
            cout << "Yes" << endl;
            return 0;
        }
    }
    cout << "No" << endl;
}