using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = NList;
        var (n, m, k) = (c[0], c[1], c[2]);
        var map = NMap(m);
        var tree = new List<int>[n];
        for (var i = 0; i < tree.Length; ++i) tree[i] = new List<int>();
        foreach (var edge in map)
        {
            tree[edge[0]].Add(edge[1]);
            tree[edge[1]].Add(edge[0]);
        }
        var p = new int[n + 1];
        p[0] = 1;
        for (var i = 1; i <= n; ++i) p[i] = p[i - 1] * (k + 1);
        var bitmax = p[n];
        var dp = new long[bitmax][];
        for (var i = 0; i < dp.Length; ++i) dp[i] = new long[n];
        for (var i = 0; i < n; ++i) dp[p[i]][i] = 1;
        var mod = 998_244_353;
        for (var b = 1; b < bitmax; ++b)
        {
            for (var i = 0; i < n; ++i)
            {
                foreach (var next in tree[i])
                {
                    var visited = b / p[next] % (k + 1);
                    if (visited == k) continue;
                    dp[b + p[next]][next] = (dp[b + p[next]][next] + dp[b][i]) % mod;
                }
            }
        }
        var ans = 0L;
        for (var i = 0; i < n; ++i) ans = (ans + dp[^1][i]) % mod;
        WriteLine(ans);
    }
    class Pair : IComparable<Pair>
    {
        public int X;
        public int Y;
        public int Val;
        public Pair(int x, int y, int val)
        {
            X = x; Y = y; Val = val;
        }
        public int CompareTo(Pair b)
        {
            return Val.CompareTo(b.Val);
        }
    }
    class PriorityQueue<T> where T : IComparable<T>
    {
        public T[] List;
        public int Count;
        bool IsTopMax;
        public PriorityQueue(int count, bool isTopMax)
        {
            IsTopMax = isTopMax;
            List = new T[Math.Max(128, count)];
        }
        public void Enqueue(T value)
        {
            if (Count == List.Length)
            {
                var newlist = new T[List.Length * 2];
                for (var i = 0; i < List.Length; ++i) newlist[i] = List[i];
                List = newlist;
            }
            var pos = Count;
            List[pos] = value;
            ++Count;
            while (pos > 0)
            {
                var parent = (pos - 1) / 2;
                if (Calc(List[parent], List[pos], true)) break;
                Swap(parent, pos);
                pos = parent;
            }
        }
        public T Dequeue()
        {
            --Count;
            Swap(0, Count);
            var pos = 0;
            while (true)
            {
                var child = pos * 2 + 1;
                if (child >= Count) break;
                if (child + 1 < Count && Calc(List[child + 1], List[child], false)) ++child;
                if (Calc(List[pos], List[child], true)) break;
                Swap(pos, child);
                pos = child;
            }
            return List[Count];
        }
        bool Calc(T a, T b, bool equalVal)
        {
            var ret = a.CompareTo(b);
            if (ret == 0 && equalVal) return true;
            return IsTopMax ? ret > 0 : ret < 0;
        }
        void Swap(int a, int b)
        {
            var tmp = List[a];
            List[a] = List[b];
            List[b] = tmp;
        }
    }
}