#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

#include <atcoder/modint>
using mint = atcoder::modint1000000007;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  ll a, b, c, d, n;
  cin >> a >> b >> c >> d >> n;
  mint ans = mint(16).pow(n / 8);
  n %= 8;
  ll maxim = -1e18;
  for (ll _x : { a, b }) {
    for (ll _y : { c, d }) {
      ll x = _x, y = _y;
      rep(_, n) {
        ll xx = x - y, yy = x + y;
        swap(x, xx), swap(y, yy);
      }
      maxim = max(maxim, x + y);
    }
  }
  ans *= maxim;
  cout << ans.val() << '\n';
  return 0;
}