#include<bits/stdc++.h>
#define ALL(v) std::begin(v),std::end(v)
using lint=long long;
using lubl=long double;
lint mod=1'000'000'007;
lint mul(lint x,lint y){return x*y%mod;}
lint&mul_assign(lint&x,lint y){return x=x*y%mod;}
lint power(lint x,lint p){
    lint ans=1;
    for(;p;p>>=1){
        if(p&1)mul_assign(ans,x);
        mul_assign(x,x);
    }
    return ans;
}
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    lint n;std::cin>>n;
    std::cout<<(n==1?2:mul(mul(power(3,n%2),power(5,std::max(0ll,n/2-1))),4))<<'\n';
}