#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

uint64_t powermod(long double x, uint64_t y, uint64_t p)
{
    long long result = 1;      
    x = fmod(x,p);   
               
    //cout<<"x="<<x<<" y="<<y<<" p="<<p<<std::endl;
    while (y > 0)
    {

        if (y & 1) //odd
            result = fmod((result*x), p);

        y = y>>1; //divide by 2
        x = fmod((x*x), p);  
    }
    return result;
}

int main() {
    uint64_t a=0;
    uint64_t b=0;
    uint64_t c=0;
    long double k=0.5;
    cin>>a>>b>>c;
    uint64_t res=powermod((0.5*a)+(0.5*b) ,c,(pow(10,9)+7));
    cout<<res<<endl;
    return 0;
}