#include /** * @title Modint * @docs mint.md */ template class ModInt{ public: constexpr static uint32_t MOD = M; uint64_t val; constexpr ModInt(): val(0){} constexpr ModInt(int64_t n){ if(n >= M) val = n % M; else if(n < 0) val = n % M + M; else val = n; } constexpr auto operator+(const ModInt &a) const {return ModInt(val + a.val);} constexpr auto operator-(const ModInt &a) const {return ModInt(val - a.val);} constexpr auto operator*(const ModInt &a) const {return ModInt(val * a.val);} constexpr auto operator/(const ModInt &a) const {return ModInt(val * a.inv().val);} constexpr auto& operator=(const ModInt &a){val = a.val; return *this;} constexpr auto& operator+=(const ModInt &a){if((val += a.val) >= M) val -= M; return *this;} constexpr auto& operator-=(const ModInt &a){if(val < a.val) val += M; val -= a.val; return *this;} constexpr auto& operator*=(const ModInt &a){(val *= a.val) %= M; return *this;} constexpr auto& operator/=(const ModInt &a){(val *= a.inv().val) %= M; return *this;} constexpr bool operator==(const ModInt &a) const {return val == a.val;} constexpr bool operator!=(const ModInt &a) const {return val != a.val;} constexpr auto& operator++(){*this += 1; return *this;} constexpr auto& operator--(){*this -= 1; return *this;} constexpr auto operator++(int){auto t = *this; *this += 1; return t;} constexpr auto operator--(int){auto t = *this; *this -= 1; return t;} constexpr static ModInt power(int64_t n, int64_t p){ if(p < 0) return power(n, -p).inv(); int64_t ret = 1, e = n % M; for(; p; (e *= e) %= M, p >>= 1) if(p & 1) (ret *= e) %= M; return ret; } constexpr static ModInt inv(int64_t a){ int64_t b = M, u = 1, v = 0; while(b){ int64_t t = a / b; a -= t * b; std::swap(a,b); u -= t * v; std::swap(u,v); } u %= M; if(u < 0) u += M; return u; } constexpr static auto frac(int64_t a, int64_t b){return ModInt(a) / ModInt(b);} constexpr auto power(int64_t p) const {return power(val, p);} constexpr auto inv() const {return inv(val);} friend constexpr auto operator-(const ModInt &a){return ModInt(-a.val);} friend constexpr auto operator+(int64_t a, const ModInt &b){return ModInt(a) + b;} friend constexpr auto operator-(int64_t a, const ModInt &b){return ModInt(a) - b;} friend constexpr auto operator*(int64_t a, const ModInt &b){return ModInt(a) * b;} friend constexpr auto operator/(int64_t a, const ModInt &b){return ModInt(a) / b;} friend std::istream& operator>>(std::istream &s, ModInt &a){s >> a.val; return s;} friend std::ostream& operator<<(std::ostream &s, const ModInt &a){s << a.val; return s;} template static auto div(){ static auto value = inv(N); return value; } explicit operator int32_t() const noexcept {return val;} explicit operator int64_t() const noexcept {return val;} }; using mint = ModInt<1000000007>; /** * @docs input_vector.md */ template std::vector input_vector(int N){ std::vector ret(N); for(int i = 0; i < N; ++i) std::cin >> ret[i]; return ret; } template std::vector> input_vector(int N, int M){ std::vector> ret(N); for(int i = 0; i < N; ++i) ret[i] = input_vector(M); return ret; } int main(){ int H, W; std::cin >> H >> W; auto A = input_vector(H, W); mint P = 1; int zero = 0; for(int i = 0; i < H; ++i){ for(int j = 0; j < W; ++j){ if(A[i][j] != 0) P *= A[i][j]; else zero += 1; } } std::vector row(H, 1), col(W, 1); std::vector row_zero(H, 0), col_zero(W, 0); for(int i = 0; i < H; ++i){ for(int j = 0; j < W; ++j){ if(A[i][j] != 0){ row[i] *= A[i][j]; col[j] *= A[i][j]; }else{ row_zero[i] += 1; col_zero[j] += 1; } } } int Q; std::cin >> Q; while(Q--){ int r, c; std::cin >> r >> c; --r, --c; mint ans = P; ans /= row[r]; ans /= col[c]; if(A[r][c] != 0) ans *= A[r][c]; int z = zero; z -= row_zero[r]; z -= col_zero[r]; if(A[r][c] == 0) z += 1; if(z) ans = 0; std::cout << ans << "\n"; } return 0; }