using System;
using System.Collections.Generic;
using CompLib.Collections;
using CompLib.Mathematics;
using CompLib.Util;

class Program
{
    private int N, M, K;
    private char op;
    private int[] B;
    private int[] A;

    public void Solve()
    {
        var sc = new Scanner();
        N = sc.NextInt();
        M = sc.NextInt();
        K = sc.NextInt();
        op = sc.NextChar();
        B = new int[M];
        for (int i = 0; i < M; i++)
        {
            B[i] = sc.NextInt();
        }

        A = new int[N];
        for (int i = 0; i < N; i++)
        {
            A[i] = sc.NextInt();
        }

        if (op == '+')
        {
            Plus();
        }
        else if (op == '*')
        {
            Mul();
        }
    }

    void Plus()
    {
        var map = new HashMap<int, int>();
        for (int i = 0; i < N; i++)
        {
            map[A[i] % K]++;
        }


        var map2 = new HashMap<int, int>();
        for (int i = 0; i < M; i++)
        {
            map2[B[i] % K]++;
        }

        long ans = 0;
        foreach (KeyValuePair<int, int> pair in map2)
        {
            if (pair.Key == 0) ans += (long) pair.Value * map[0];
            else ans += (long) pair.Value * map[K - pair.Key];
        }

        Console.WriteLine(ans);
    }


    void Mul()
    {
        // kの約数列挙
        var l = new List<int>();
        for (int t = 1; t * t <= K; t++)
        {
            if (K % t == 0)
            {
                l.Add(t);
                if (t * t != K) l.Add(K / t);
            }
        }

        var map = new HashMap<int, int>();
        foreach (int i in A)
        {
            foreach (int j in l)
            {
                if (i % j == 0) map[j]++;
            }
        }

        long ans = 0;
        foreach (int i in B)
        {
            var gcd = MathEx.GCD(i, K);
            ans += map[K / gcd];
        }

        Console.WriteLine(ans);
    }

    public static void Main(string[] args) => new Program().Solve();
}

// https://bitbucket.org/camypaper/complib
namespace CompLib.Mathematics
{
    using System;
    using System.Collections.Generic;

    #region GCD LCM

    /// <summary>
    /// 様々な数学的関数の静的メソッドを提供します．
    /// </summary>
    public static partial class MathEx
    {
        /// <summary>
        /// 2 つの整数の最大公約数を求めます．
        /// </summary>
        /// <param name="n">最初の値</param>
        /// <param name="m">2 番目の値</param>
        /// <returns>2 つの整数の最大公約数</returns>
        /// <remarks>ユークリッドの互除法に基づき最悪計算量 O(log N) で実行されます．</remarks>
        public static int GCD(int n, int m)
        {
            return (int) GCD((long) n, m);
        }


        /// <summary>
        /// 2 つの整数の最大公約数を求めます．
        /// </summary>
        /// <param name="n">最初の値</param>
        /// <param name="m">2 番目の値</param>
        /// <returns>2 つの整数の最大公約数</returns>
        /// <remarks>ユークリッドの互除法に基づき最悪計算量 O(log N) で実行されます．</remarks>
        public static long GCD(long n, long m)
        {
            n = Math.Abs(n);
            m = Math.Abs(m);
            while (n != 0)
            {
                m %= n;
                if (m == 0) return n;
                n %= m;
            }

            return m;
        }


        /// <summary>
        /// 2 つの整数の最小公倍数を求めます．
        /// </summary>
        /// <param name="n">最初の値</param>
        /// <param name="m">2 番目の値</param>
        /// <returns>2 つの整数の最小公倍数</returns>
        /// <remarks>最悪計算量 O(log N) で実行されます．</remarks>
        public static long LCM(long n, long m)
        {
            return (n / GCD(n, m)) * m;
        }
    }

    #endregion

    #region PrimeSieve

    public static partial class MathEx
    {
        /// <summary>
        /// ある値までに素数表を構築します．
        /// </summary>
        /// <param name="max">最大の値</param>
        /// <param name="primes">素数のみを入れた数列が返される</param>
        /// <returns>0 から max までの素数表</returns>
        /// <remarks>エラトステネスの篩に基づき，最悪計算量 O(N loglog N) で実行されます．</remarks>
        public static bool[] Sieve(int max, List<int> primes = null)
        {
            var isPrime = new bool[max + 1];
            for (int i = 2; i < isPrime.Length; i++) isPrime[i] = true;
            for (int i = 2; i * i <= max; i++)
                if (!isPrime[i]) continue;
                else
                    for (int j = i * i; j <= max; j += i)
                        isPrime[j] = false;
            if (primes != null)
                for (int i = 0; i <= max; i++)
                    if (isPrime[i])
                        primes.Add(i);

            return isPrime;
        }
    }

    #endregion
}

namespace CompLib.Collections
{
    using System.Collections.Generic;

    public class HashMap<TKey, TValue> : Dictionary<TKey, TValue>
    {
        public new TValue this[TKey key]
        {
            get
            {
                TValue o;
                return TryGetValue(key, out o) ? o : default(TValue);
            }
            set { base[key] = value; }
        }
    }
}

namespace CompLib.Util
{
    using System;
    using System.Linq;

    class Scanner
    {
        private string[] _line;
        private int _index;
        private const char Separator = ' ';

        public Scanner()
        {
            _line = new string[0];
            _index = 0;
        }

        public string Next()
        {
            while (_index >= _line.Length)
            {
                _line = Console.ReadLine().Split(Separator);
                _index = 0;
            }

            return _line[_index++];
        }

        public int NextInt() => int.Parse(Next());
        public long NextLong() => long.Parse(Next());
        public double NextDouble() => double.Parse(Next());
        public decimal NextDecimal() => decimal.Parse(Next());
        public char NextChar() => Next()[0];
        public char[] NextCharArray() => Next().ToCharArray();

        public string[] Array()
        {
            _line = Console.ReadLine().Split(' ');
            _index = _line.Length;
            return _line;
        }

        public int[] IntArray() => Array().Select(int.Parse).ToArray();
        public long[] LongArray() => Array().Select(long.Parse).ToArray();
        public double[] DoubleArray() => Array().Select(double.Parse).ToArray();
        public decimal[] DecimalArray() => Array().Select(decimal.Parse).ToArray();
    }
}