1 files changed, 0 insertions, 65 deletions
diff --git a/math/polynomial.cpp b/math/polynomial.cpp
deleted file mode 100644
index 44f6207..0000000
--- a/math/polynomial.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-struct poly {
-	vector<ll> data;
-
-	poly(int deg = 0) : data(max(1, deg)) {}
-	poly(initializer_list<ll> _data) : data(_data) {}
-
-	int size() const {return sz(data);}
-
-	void trim() {
-		for (ll& x : data) x = (x % mod + mod) % mod;
-		while (size() > 1 && data.back() == 0) data.pop_back();
-	}
-
-	ll& operator[](int x) {return data[x];}
-	const ll& operator[](int x) const {return data[x];}
-
-	ll operator()(int x) const {
-		ll res = 0;
-		for (int i = size() - 1; i >= 0; i--)
-			res = (res * x + data[i]) % mod;
-		return res % mod;
-	}
-
-	poly& operator+=(const poly& o) {
-		if (size() < o.size()) data.resize(o.size());
-		for (int i = 0; i < o.size(); i++)
-			data[i] = (data[i] + o[i]) % mod;
-		return *this;
-	}
-
-	poly operator*(const poly& o) const {
-		poly res(size() + o.size() - 1);
-		for (int i = 0; i < size(); i++) {
-			for (int j = 0; j < o.size(); j++) {
-				res[i + j] += (data[i] * o[j]) % mod;
-		}}
-		res.trim();
-		return res;
-	}
-
-	//return p(x+a)
-	poly operator<<(ll a) const {
-		poly res(size());
-		for (int i = size() - 1; i >= 0; i--) {
-			for (int j = size() - i - 1; j >= 1; j--)
-				res[j] = (res[j] * a + res[j - 1]) % mod;
-			res[0] = (res[0] * a + res[i]) % mod;
-		}
-		return res;
-	}
-
-	pair<poly, poly> divmod(const poly& d) const {
-		int i = size() - d.size();
-		poly s(i + 1), r = *this;
-		ll inv = multInv(d.data.back(), mod);
-		for (; i >= 0; i--) {
-			s[i] = (r.data.back() * inv) % mod;
-			r.data.pop_back();
-			for (int j = 0; i + j < r.size(); j++) {
-				r[i + j] = (r.data[i + j] - s[i] * d[j]) % mod;
-		}}
-		s.trim(); r.trim();
-		return {s, r};
-	}
-};