10 9 5
0 0 0 0 0 0 0 0 0 4
10 3
10 7
10 5
10 8
10 9
10 1
10 4
10 6
10 2
 10 20 5
2 2 1 4 0 3 0 4 1 3
6 1
8 5
2 10
3 5
1 9
4 6
9 7
2 3
7 4
10 8
4 9
2 5
4 10
2 8
10 3
1 8
8 10
6 7
5 1
10 3
 10 9 2
1 1 0 1 1 1 1 1 1 1
3 10
3 8
3 6
3 7
3 5
3 4
3 1
3 9
3 2
 10 10 5
3 4 2 0 3 0 1 1 2 4
8 9
7 3
5 2
4 8
3 5
6 8
3 5
1 10
10 6
9 1
 10 30 10
7 9 1 5 4 6 0 3 8 2
10 8
8 5
6 1
8 5
3 10
10 8
9 2
8 5
7 3
3 10
1 9
10 8
6 1
1 9
8 5
7 3
1 9
7 3
7 3
4 6
10 8
7 3
3 10
10 8
1 9
8 5
6 1
4 6
3 10
6 1
 6 7 3
0 1 2 0 1 2
1 2
2 3
3 1
3 4
4 5
5 6
6 4
 10 9 2
0 1 0 0 1 0 1 1 1 1
3 7
3 2
8 6
1 7
3 9
5 4
10 1
4 9
6 2
 10 10 10
2 3 5 7 0 8 6 9 4 1
1 2
10 1
5 10
5 10
4 6
8 5
1 2
1 2
7 4
1 2
 10 9 5
1 1 1 1 1 2 1 1 1 1
6 7
6 3
6 5
6 4
6 9
6 8
6 1
6 10
6 2
 10 9 2
0 0 0 0 1 1 0 1 1 1
4 10
8 2
10 3
3 9
1 5
6 2
6 1
7 9
8 7
 5 5 3
2 2 0 1 0
5 4
5 2
1 4
5 1
4 3
 10 9 5
0 4 1 0 1 2 1 0 4 4
8 7
4 3
1 5
2 4
6 5
10 8
9 1
6 7
6 3
 7 8 3
0 0 1 2 2 0 1
1 5
4 3
7 5
1 7
3 2
2 4
6 7
6 5
 10 30 7
5 4 2 3 3 2 5 0 1 6
7 2
2 4
9 3
3 5
5 2
7 10
6 5
10 1
9 8
10 8
3 4
10 4
4 2
7 6
2 8
1 10
5 10
5 6
5 6
6 2
6 5
9 10
8 6
2 4
9 7
1 9
10 4
6 10
9 3
2 7
 5 5 3
1 1 2 0 0
1 3
1 5
2 3
3 4
2 4
 10 10 2
1 1 1 0 1 0 0 0 0 1
4 10
10 7
7 1
5 6
6 3
1 8
2 9
5 4
3 8
2 9
 9 13 3
0 2 1 2 2 0 1 0 1
4 7
9 5
7 5
7 6
9 6
8 2
3 2
8 3
4 3
4 9
1 2
1 3
5 6
 6 3 3
0 1 2 0 1 2
4 5
5 6
4 6
 10 10 5
3 3 3 4 4 1 3 0 2 4
7 5
10 8
10 8
5 8
2 10
9 2
7 4
3 4
7 5
4 8
 10 15 2
1 0 1 1 0 0 1 0 0 1
5 1
7 8
2 10
3 5
1 9
6 4
7 9
2 3
6 4
8 10
9 4
8 4
8 1
10 8
6 7
 2 1 2
1 0
1 2
 5 5 4
0 1 2 3 3
1 2
2 3
3 4
4 1
3 5
 10 9 5
2 1 2 0 1 0 1 2 0 4
10 9
3 7
1 5
10 6
7 9
10 4
5 4
2 6
8 2
 9 10 3
0 2 2 1 0 0 1 2 1
4 6
2 6
5 7
4 8
9 2
9 1
3 5
8 1
3 7
6 2
 10 20 3
2 2 1 1 2 0 0 1 2 2
7 5
7 10
2 7
10 4
10 8
1 7
3 7
9 7
3 10
6 3
4 1
4 1
8 6
3 7
10 3
2 7
8 5
2 7
1 4
2 6
 10 9 8
3 2 1 1 5 6 7 0 4 0
10 7
5 9
10 4
7 6
6 5
3 2
2 1
9 1
3 8

1
1 
 5
1 4 6 7 9 
 10
1 2 3 4 5 6 7 8 9 10 
 1
2 
 1
2 
 3
4 5 6 
 10
1 2 3 4 5 6 7 8 9 10 
 1
2 
 1
6 
 10
1 2 3 4 5 6 7 8 9 10 
 3
1 4 5 
 1
6 
 3
2 3 4 
 8
2 3 4 5 7 8 9 10 
 3
2 3 4 
 2
2 9 
 1
4 
 1
1 
 1
1 
 10
1 2 3 4 5 6 7 8 9 10 
 2
1 2 
 1
5 
 1
1 
 3
3 5 7 
 3
3 7 10 
 1
4 

import java.util.*;
import java.io.*;
public class Prac {

	static int mod=1000000007;

	public static void main(String[] args) {
		FastReader sc=new FastReader();
		PrintStream ps=System.out;

		int n=sc.nextInt(), m=sc.nextInt(), h=sc.nextInt();
		
		int[] mainhrs=new int[n];
		Set<Integer>[] gr=new HashSet[n];
		for(int i=0; i<n; i++) {
			mainhrs[i]=sc.nextInt();
			gr[i]=new HashSet<>();
		}

		for(int i=0; i<m; i++) {
			int l=sc.nextInt()-1, r=sc.nextInt()-1;

			if(next(mainhrs[l], h)==mainhrs[r]) gr[l].add(r);
			if(next(mainhrs[r], h)==mainhrs[l]) gr[r].add(l);
		}

		Stack<Integer> st=new Stack<>();
		boolean[] vis=new boolean[n];
		for(int i=0; i<n; i++)
			dfs(st, gr, i, vis);

		gr=reverse(gr);
		vis=new boolean[n];

		Map<Integer, Integer> toTest=new HashMap<>();
		while(!st.empty()) {
			int i=st.pop();
			if(!vis[i])
				toTest.put(i, dfs(gr, i, vis));
		}

		gr=reverse(gr);
		List<Integer> result = null;
		int min=Integer.MAX_VALUE;
		for(Map.Entry<Integer, Integer> e: toTest.entrySet()) {
			int i=e.getKey();
			int c=e.getValue();
			vis=new boolean[n];
			if(!vis[i]) {
				List<Integer> t=new ArrayList<>();
				if(startwith(i, gr, t, vis, c) && min > t.size()) {
					min=t.size();
					result=t;
				}
			}
		}

		ps.println(min);

		for(int i=0; i<min; i++)
			ps.print(result.get(i)+1+" ");

	}

	public static void dfs(Stack<Integer> stack, Set<Integer>[] gr, int i, boolean[] vis) {
		if(vis[i]) return;
		vis[i]=true;

		for (int nv: gr[i]) 
			dfs(stack, gr, nv, vis);

		stack.push(i);
	}

	public static int dfs(Set<Integer>[] gr, int i, boolean[] vis) {
		if(vis[i]) return 0;
		vis[i]=true;

		int c=1;
		for (int nv: gr[i]) 
			c+=dfs(gr, nv, vis);

		return c;
	}

	public static Set<Integer>[] reverse(Set<Integer>[] gr){
		int n=gr.length;
		Set<Integer>[] ngr=new HashSet[n];
		for(int i=0; i<n; i++)
			ngr[i]=new HashSet<>();

		for(int i=0; i<n; i++)
			for(int nv: gr[i])
				ngr[nv].add(i);
		
		return ngr;
	}

	public static boolean startwith (int i, Set<Integer>[] gr, List<Integer> result, boolean[] vis, int c) {

		if(vis[i]) return false;
		vis[i]=true;
		result.add(i);
		if(result.size()==c+1) return false;

		for (int nv: gr[i]) 
			startwith(nv, gr, result, vis, c);

		return true;
	}

	public static int next(int i, int h){
		i++;
		if(i==h) return 0;
		else return i;
	}
}

class FastReader  {
    BufferedReader br;
    StringTokenizer st;

    public FastReader()
    {
        br = new BufferedReader(new
                 InputStreamReader(System.in));
    }

    String next()
    {
        while (st == null || !st.hasMoreElements())
        {
            try
            {
                st = new StringTokenizer(br.readLine());
            }
            catch (IOException  e)
            {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt()
    {
        return Integer.parseInt(next());
    }

    char nextChar()
    {
        return next().charAt(0);
    }

    long nextLong()
    {
        return Long.parseLong(next());
    }

    double nextDouble()
    {
        return Double.parseDouble(next());
    }

    String nextLine()
    {
        String str = "";
        try
        {
            str = br.readLine();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        return str;
    }
}