#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
const long mod=1000000007;

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

int main(){
  long A,B,C,D,N,ans;
  cin>>A>>B>>C>>D>>N;
  assert(A<=B);
  assert(C<=D);
  assert(abs(A)<=1e9);
  assert(abs(B)<=1e9);
  assert(abs(C)<=1e9);
  assert(abs(D)<=1e9);
  assert(0<=N);
  assert(N<=1e18);
  assert(N%8!=2);
  ans=max({f(A,C,N%8),f(A,D,N%8),f(B,C,N%8),f(B,D,N%8)})%mod*pow_mod(16,N/8,mod)%mod;
  if(ans<0){
    cout<<ans+mod<<endl;
  }
  else{
    cout<<ans<<endl;
  }
}