#include #include using namespace std; const long long MOD = 1000000007; template struct ModInt{ int n; ModInt():n(0){} ModInt(long long n_):n(n_ >= 0 ? n_%mod : mod - ((-n_)%mod) ){} ModInt(int n_):n(n_ >= 0 ? n_%mod : mod - ((-n_)%mod) ){} ModInt &operator+=(const ModInt &p){ if((n+=p.n) >= mod)n-=mod; return *this; } ModInt &operator-=(const ModInt &p){ n+=mod-p.n; if(n >= mod)n-=mod; return *this; } ModInt &operator*=(const ModInt &p){ n = (int) ((1LL*n*p.n)%mod); return *this; } ModInt &operator/=(const ModInt &p){ *this *= p.inverse(); return *this; } ModInt operator-() const {return ModInt(-n);} ModInt operator+(const ModInt &p) const {return ModInt(*this) += p;} ModInt operator-(const ModInt &p) const {return ModInt(*this) -= p;} ModInt operator*(const ModInt &p) const {return ModInt(*this) *= p;} ModInt operator/(const ModInt &p) const {return ModInt(*this) /= p;} bool operator==(const ModInt &p) const {return n==p.n;} bool operator<(const ModInt &p) const {return n(const ModInt &p) const {return n>p.n;} bool operator>=(const ModInt &p) const {return n>=p.n;} bool operator<=(const ModInt &p) const {return n<=p.n;} bool operator!=(const ModInt &p) const {return n!=p.n;} ModInt inverse() const { int a = n,b = mod,u = 1,v = 0; while(b){ int t = a/b; a -= t*b; swap(a,b); u -= t*v; swap(u,v); } return ModInt(u); } ModInt pow(int64_t z) const { ModInt ret(1),mul(n); while(z > 0){ if(z & 1) ret *= mul; mul *= mul; z >>= 1; } return ret; } int getMod() const { return mod; } friend ostream &operator<<(ostream &os, const ModInt &p){ return os << p.n; } friend istream &operator>>(istream &is, ModInt &a){ int64_t t; is >> t; a = ModInt ((long long)t); return (is); } }; using mint = ModInt; template T uPow(T z,T n, T mod){ T ans = 1; while(n != 0){ if(n%2){ ans*=z; if(mod)ans%=mod; } n >>= 1; z*=z; if(mod)z%=mod; } return ans; } int main(){ int n;cin>>n; vector A(n); vector rA(n+1, 1); vector rrA(n+1, 1); for(int i = 0; n > i; i++){ cin>>A[i]; if(A[i] == 0){ cout << 0 << endl; return 0; } } for(int i = 1; n >= i; i++){ rA[i] = rA[i-1]*A[i-1]; } for(int i = 1; n >= i; i++){ rrA[i] = rrA[i-1] * uPow(A[i-1], (long long)i, MOD); } long long nw = 1; int prev = 0; mint ans = 1; for(int i = 0; n > i; i++){ nw *= A[i]; while(nw >= 1000000000){ nw /= A[prev]; prev++; } //cout << prev << " " << i << endl; if(prev){ //cout << (rrA[i+1] / rrA[prev]) << " " << (rA[i+1]/rA[prev]) << " " << (prev) << endl; //cout << (rrA[i+1] / rrA[prev])/((rA[i+1]/rA[prev])*(prev)) << endl; ans *= (rrA[i+1] / rrA[prev])/((rA[i+1]/rA[prev]).pow(prev)); }else{ //cout << (rrA[i+1] / rrA[prev]) << endl; ans *= (rrA[i+1] / rrA[prev]); } } cout << ans << endl; }