#include using namespace std; #define rep(i,n) REP(i,0,n) #define REP(i,s,e) for(int i=(s); i<(int)(e); i++) #define repr(i, n) REPR(i, n, 0) #define REPR(i, s, e) for(int i=(int)(s-1); i>=(int)(e); i--) #define all(r) r.begin(),r.end() #define rall(r) r.rbegin(),r.rend() typedef long long ll; typedef vector vi; typedef vector vl; const ll INF = 1e18; const ll MOD = 1e9 + 7; template T chmax(T& a, const T& b){return a = (a > b ? a : b);} template T chmin(T& a, const T& b){return a = (a < b ? a : b);} #define DEBUG_MODE #ifdef DEBUG_MODE #define dump(x) cout << #x << " : " << x << " " #define dumpL(x) cout << #x << " : " << x << '\n' #define LINE cout << "line : " << __LINE__ << " " #define LINEL cout << "line : " << __LINE__ << '\n' #define dumpV(v) cout << #v << " : ["; for(auto& t : v) cout << t << ", "; cout<<"]" << " " #define dumpVL(v) cout << #v << " : ["; for(auto& t : v) cout << t << ", "; cout<<"]" << endl #define STOP assert(false) #else #define dump(x) #define dumpL(x) #define LINE #define LINEL #define dumpV(v) #define dumpVL(v) #define STOP assert(false) #endif #define mp make_pair namespace std { template ostream &operator <<(ostream& out, const pair& a) { out << '(' << a.fi << ", " << a.se << ')'; return out; } } template T pow_fast(T x, U n) { T ret = (T)1; while(n) { if(n & (U)1) ret *= x; x *= x; n >>= 1; } return ret; } template struct ModInt { ModType val; ModInt() : val(0) {} ModInt(ModType x) : val(x % MOD) { if(val < 0) val += MOD; }; operator ModType() const { return val; } ModInt &operator+=(const ModInt &m) { val += m.val; if(val >= MOD) val -= MOD; return *this; } ModInt &operator-=(const ModInt &m) { val -= m.val; if(val < 0) val += MOD; return *this; } ModInt &operator*=(const ModInt &m) { (val *= m.val) %= MOD; return *this; } ModInt &operator/=(const ModInt &m) { *this *= m.inverse(); return *this; } ModInt operator+(const ModInt &m) const { return ModInt(*this) += m; } ModInt operator-(const ModInt &m) const { return ModInt(*this) -= m; } ModInt operator*(const ModInt &m) const { return ModInt(*this) *= m; } ModInt operator/(const ModInt &m) const { return ModInt(*this) /= m; } ModInt inverse() const { return pow_fast(*this, MOD - 2); } ModInt pow(ModType n) const {return pow_fast(*this, n); } friend std::ostream &operator<<(std::ostream &os, const ModInt &rhs) { os << rhs.val; return os; } friend std::istream &operator>>(std::istream &is, ModInt &rhs) { ModType value; is >> value; rhs = ModInt(value); return is; } }; using mint = ModInt; int main(){ int n; cin >> n; vl a(n); rep(i, n) cin >> a[i]; rep(i, n) if(a[i] == 0) { cout << 0 << '\n'; return 0; } mint ans = a[0]; ll x = a[0]; mint y = a[0]; auto check = [&](int i) { return x * a[i] < 1e9; }; int l = 0, r = 1; while(l < n) { if(r == n || !check(r)) { y /= mint(x); x /= a[l]; l++; } else { x *= a[r]; y *= mint(a[r]).pow(r - l + 1); ++r; ans *= y; } // dump(l); dump(r); dump(x);dumpL(y); } cout << ans << '\n'; return 0; }