#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
long long c1,c2,c3;

long long modpowIter(long long a, long long b) {
        long long ans=1;
        while(b != 0) {
                if(b%2 == 1)
                        ans=(ans*a)%1000000007;

                a=(a*a)%1000000007;
                b /= 2;
        }
        return ans;
}
int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    cin>>c1>>c2>>c3;
    cout<<modpowIter((c1+c2)/2,c3);
    return 0;
}