Method size

Math/Subset Sum Problem.cpp:142–142

  template<class...Args> poly(Args...args): a(args...) { }
  poly(const initializer_list<mint> &x): a(x.begin(), x.end()) { }
  int size() const { return (int)a.size(); }
  inline mint coef(const int i) const { return (i < a.size() && i >= 0) ? a[i]: mint(0); }
  mint operator[](const int i) const { return (i < a.size() && i >= 0) ? a[i]: mint(0); } //Beware!! p[i] = k won't change the value of p.a[i]
  bool is_zero() const {