#define _USE_MATH_DEFIMES
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cctype>
#include <climits>
#include <clocale>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <ctime>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <regex>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

const int MOD = 1'000'000'007;
const int MOD2 = 998'244'353;
const int INF = 1'000'000'000; //1e9
const int NIL = -1;
const long long LINF = 1'000'000'000'000'000'000; // 1e18
const long double EPS = 1E-10;

template<class T, class S> inline bool chmax(T &a, const S &b){
    if(a < b){
        a = b; return true;
    }
    return false;
}
template<class T, class S> inline bool chmin(T &a, const S &b){
    if(b < a){
        a = b; return true;
    }
    return false;
}








long long power(long long a, unsigned long long b, long long m){
    long long ret(1);
    while(b){
        if(b & 1) ret = (ret * a) % m;
        a = (a * a) % m;
        b /= 2;
        if(ret < 0) ret += m;
        if(a < 0) a += m;
    }
    return ret;
}

long long rec(long long a, long long b, int n){
    for(int i{0}; i < n; ++i){
        a -= b;
        b += a + b;
    }
    return a + b;
}

int main(){
    long long A, B, C, D; std::cin >> A >> B >> C >> D;
    long long N; std::cin >> N;
    long long prd{power(16, N / 8, MOD)};

    long long ans{std::max({rec(A, C, N%8), rec(A, D, N%8), rec(B, C, N%8), rec(B, D, N%8)}) % MOD};
    (ans *= prd) %= MOD;
    if(ans < 0) ans += MOD;
    std::cout << ans << std::endl;
    return 0;
}