//GIVE ME AC!!!!!!!!!!!!!!!!! //#pragma GCC target("avx") //#pragma GCC optimize("O3") //#pragma GCC optimize("unroll-loops") #include #define ll long long #define ld long double #define floatset() fixed<; using vi=vector; using vs=vector; using vc=vector; using vvl=vector; using P=pair; using vvc=vector; using vd=vector; using vp=vector

; using vb=vector; const int dx[8]={1,0,-1,0,1,-1,-1,1}; const int dy[8]={0,1,0,-1,1,1,-1,-1}; const ll inf=2e18; const ll MOD=1000000007; const ll mod=998244353; const double pi=acos(-1); template ostream &operator<<(ostream&os,const pair&p) { os< istream &operator>>(istream&is,pair&p) { is>>p.first>>p.second; return is; } template ostream &operator<<(ostream&os,const vector&v) { for(int i=0;i<(int)v.size();i++) { os< istream &operator>>(istream&is,vector&v) { for(T &in:v)is>>in; return is; } void scan(){} template void scan(Head&head,Tail&... tail) { cin>>head; scan(tail...); } template void print(const T &t) { cout << t << '\n'; } template void print(const Head &head, const Tail &... tail) { cout << head << ' '; print(tail...); } template void fin(const T &... a) { print(a...); exit(0); } template ll sum_(vector&v){ ll res=0; for(auto &e:v)res+=e; return res; } template inline bool chmax(T1&a,T2 b){return a inline bool chmin(T1&a,T2 b){return a>b&&(a=b,true);} long long modpow(long long a,long long n,long long m){ long long ans=1; while(n>0){ if(n&1)ans=ans*a%m; a=a*a%m; n>>=1; } return ans; } int main(){ LL(a,b,c,k); k=modpow(2,k,MOD-1); ll p=(((a*b)%MOD)*c)%MOD; fin(modpow(p,k,MOD)); }