#include using namespace std; using VS = vector; using LL = long long; using VI = vector; using VVI = vector; using PII = pair; using PLL = pair; using VL = vector; using VVL = vector; #define ALL(a) begin((a)),end((a)) #define RALL(a) (a).rbegin(), (a).rend() #define SZ(a) int((a).size()) #define SORT(c) sort(ALL((c))) #define RSORT(c) sort(RALL((c))) #define UNIQ(c) (c).erase(unique(ALL((c))), end((c))) #define FOR(i, s, e) for (int(i) = (s); (i) < (e); (i)++) #define FORR(i, s, e) for (int(i) = (s); (i) > (e); (i)--) #define debug(x) cerr << #x << ": " << x << endl const int INF = 1e9; const LL LINF = 1e16; const LL MOD = 1000000007; const double PI = acos(-1.0); int DX[8] = { 0, 0, 1, -1, 1, 1, -1, -1 }; int DY[8] = { 1, -1, 0, 0, 1, -1, 1, -1 }; /* ----- 2018/05/03 Problem: yukicoder 147 / Link: http://yukicoder.me/problems/no/147 ----- */ /* ------問題------ -----問題ここまで----- */ /* -----解説等----- なんか実験するとフィボナッチ数がみえる ----解説ここまで---- */ int H, W; template vector> mul(vector> &A, vector> &B) { vector> C(A.size(), vector(B[0].size())); FOR(i, 0, (int)A.size()) { FOR(k, 0, (int)B.size()) { if (A[i][k]) { FOR(j, 0, (int)B[0].size()) { C[i][j] = (C[i][j] + (A[i][k]) * (B[k][j]))%MOD; } } } } return C; } template vector> pow(vector> A, long long n) { vector> B((int)A.size(), vector((int)A.size())); FOR(i, 0, (int)A.size()) { B[i][i] = 1; } while (n > 0) { if (n & 1) B = mul(B, A); A = mul(A, A); n >>= 1; } return B; } LL fib(LL x) { vector> A(2, VL(2, 1)); A[1][1] = 0; A = pow(A, x+1); return A[0][0]%MOD; } LL string_mod(string& s) { LL ret = 0; FOR(i, 0, SZ(s)) { ret *= 10; ret += s[i] - '0'; ret %= (MOD-1); } return ret; } long long powmod(long long x, long long n, long long mod) { long long res = 1; while (n > 0) { if (n & 1) { res = (res*x) % mod; } x = (x*x) % mod; n >>= 1; } return res; } LL N; LL ans = 0LL; int main() { cin.tie(0); ios_base::sync_with_stdio(false); cin >> N; ans = 1; FOR(i, 0, N) { LL c; string d; cin >> c >> d; LL D = string_mod(d); LL F = fib(c); if (F == 0)ans = 0; LL ret = powmod(F,D,MOD); ans *= ret; ans %= MOD; } cout << ans << "\n"; return 0; }