#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 1000000000000000000LL

int main(){
	
	int N,M,K;
	cin>>N>>M>>K;
	
	vector<int> x(K);
	rep(i,K){
		cin>>x[i];
		x[i]--;
	}
	vector f(N,vector<bool>(N,false));
	rep(i,M){
		int u,v;
		cin>>u>>v;
		u--,v--;
		f[u][v] = true;
		f[v][u] = true;
	}
	vector dp(N,vector(1<<N,vector<bool>(N,false)));
	rep(i,N){
		dp[i][1<<i][i] = true;
	}
	rep(i,N){
		rep(j,1<<N){
			rep(k,N){
				if(dp[i][j][k]==false)continue;
				rep(l,N){
					if((j>>l)&1)continue;
					if(!f[k][l])continue;
					dp[i][j|(1<<l)][l] = true;
				}
			}
		}
	}
	rep(i,N+1){
		{
			int ok = 1<<N;
			ok--;
			rep(j,K){
				int Or = 0;
				rep(k,1<<N){
					if(__builtin_popcount(k)!=i)continue;
					rep(l,N){
						if(dp[x[j]][k][l]){
							Or |= 1<<l;
						}
					}
				}
				ok &= Or;
			}
			if(ok){
				cout<<"Yes"<<endl;
				return 0;
			}
		}
		
	}
	cout<<"No"<<endl;
	
	return 0;
}