#include <bits/stdc++.h>
//#include <atcoder/all>
using namespace std;
//using namespace atcoder;
//using mint = modint1000000007;
//const int mod = 1000000007;
//using mint = modint998244353;
//const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n) - 1; i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r) - 1;i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
#ifdef _MSC_VER
#define __builtin_popcount (int)__popcnt
#define __builtin_popcountll (int)__popcnt64
inline int __builtin_ctz(unsigned int n) { unsigned long i; _BitScanForward(&i, n); return i; }
inline int __builtin_ctzll(unsigned long long n) { unsigned long i; _BitScanForward64(&i, n); return i; }
inline int __builtin_clz(unsigned int n) { unsigned long i; _BitScanReverse(&i, n); return i; }
inline int __builtin_clzll(unsigned long long n) { unsigned long i; _BitScanReverse64(&i, n); return i; }
#endif
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n, m, l; cin >> n >> m >> l;
	vector<int>x(l);
	rep(i, l)cin >> x[i], x[i]--;
	vector to(n, vector<int>());
	rep(i, m) {
		int a, b; cin >> a >> b;
		a--, b--;
		to[a].push_back(b);
		to[b].push_back(a);
	}
	// dp[i][j][k]:= iがjにいて、集合がk
	vector dp(l, vector(1 << n, vector<bool>(n)));
	rep(i, l) dp[i][1 << x[i]][x[i]] = true;
	rep(i, l)rep(j, n) rep(k, 1 << n) {
		if (!dp[i][j][k])continue;
		int ni = i;
		for (auto nj : to[j]) {
			if (1 & (j >> nj))continue;
			int nk = k + (1 << j);
			dp[ni][nj][nk] = true;
		}
	}
	vector bit(n + 1, vector<int>(n));//turn pos
	rep(i, l)rep(j, n)rep(k, 1 << n) {
		if (!dp[i][j][k])continue;
		int pc = __builtin_popcount(j);
		bit[pc][k] |= 1 << i;
	}
	bool chk = false;
	rep(i, n + 1) rep(j, n) {
		if ((1 << l) - 1 == bit[i][j])chk = true;
		//cout << i << " " << j << " " << bit[i][j] << endl;
	}
	cout << (chk ? "Yes" : "No") << endl;
	return 0;
}