#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define endl '\n' #define ALL(v) (v).begin(), (v).end() #define RALL(v) (v).rbegin(), (v).rend() #define UNIQ(v) (v).erase(unique((v).begin(), (v).end()), (v).end()) typedef long long ll; typedef long double ld; typedef pair P; typedef complex comp; typedef vector< vector > matrix; struct pairhash { public: template size_t operator()(const pair &x) const { size_t seed = hash()(x.first); return hash()(x.second) + 0x9e3779b9 + (seed<<6) + (seed>>2); } }; const int inf = 1e9 + 9; const ll mod = 1e9 + 7; const double eps = 1e-8; const double pi = acos(-1); int n; ll c[30010]; string d[30010]; const ll base = 1e9; typedef vector BigInt; void Set(BigInt &a) { while (a.size() > 1 && a.back() == 0) a.pop_back(); } BigInt Integer(string s) { BigInt ans; if (s[0] == '-') return ans; if (s.size() == 0) {ans.push_back(0); return ans;} while (s.size() % 9 != 0) s = '0'+s; for (int i = 0; i < s.size(); i += 9) { int v = 0; for (int j = i; j < i+9; j++) v = v * 10 + (s[j]-'0'); ans.insert(ans.begin(), v); } Set(ans); return ans; } BigInt Integer(ll x) { string s = ""; while (x > 0) s = char(x%10+'0') + s, x /= 10; return Integer(s); } int operator % (BigInt a, ll b) { Set(a); if (b == 0) return -1; int ans = 0; for (int i = a.size()-1; i >= 0; i--) { ans = (ans * (base%b) + a[i]%b) % b; } return ans; } typedef vector vec; typedef vector mat; mat mult(mat &A, mat &B) { mat C(A.size(), vec(B[0].size())); for (int i = 0; i < A.size(); i++) { for (int k = 0; k < B.size(); k++) { for (int j = 0; j < B[0].size(); j++) { C[i][j] = (C[i][j] + A[i][k]*B[k][j] + mod) % mod; } } } return C; } mat pow(mat A, ll n) { mat B(A.size(), vec(A.size())); for (int i = 0; i < A.size(); i++) B[i][i] = 1; while (n > 0) { if (n & 1) B = mult(B, A); A = mult(A, A); n >>= 1; } return B; } ll mod_pow(ll x, ll n) { ll res = 1; while (n > 0) { if (n & 1) res = (res * x) % mod; x = (x * x) % mod; n >>= 1; } return res; } ll solve() { ll res = 1; mat A = vector >(2, vector(2, 0)); A[0][0] = A[0][1] = A[1][0] = 1; for (int i = 0; i < n; i++) { mat B = pow(A, c[i]-1); ll a = (B[0][0] * 2 + B[0][1]) % mod; ll e = Integer(d[i]) % (int)(1e9+6); res *= mod_pow(a, e); res %= mod; } return res; } void input() { cin >> n; for (int i = 0; i < n; i++) cin >> c[i] >> d[i]; } int main() { ios::sync_with_stdio(false); cin.tie(0); cout << fixed << setprecision(15); input(); cout << solve() << endl; }