using System;
using System.Collections.Generic;
using System.IO;
using System.Numerics;
class Solution {
    static void Main(String[] args) {
        ulong[] tokens = Array.ConvertAll(Console.ReadLine().Split(' '), UInt64.Parse);
        
        ulong a = tokens[0];
        ulong b = tokens[1];
        ulong t = tokens[2];
        
        double aResult = a * .5D;
        double bResult = b * .5D;

        BigInteger cells = new BigInteger(aResult + bResult);
        BigInteger power = new BigInteger(t);
        BigInteger mod = new BigInteger(Math.Pow(10, 9) + 7D);
        
        BigInteger cellCount = BigInteger.ModPow(cells, power, mod);
       // BigInteger bigInt = new BigInteger(cells);
        //BigInteger bigInt = BigInteger.Pow(cells, t);
        Console.WriteLine(cellCount);
        //ulong result = (ulong)(Math.Pow(cells, t)) % (ulong)(Math.Pow(10, 9) + 7D);
        
        //Console.WriteLine(result);
    }
}