結果

問題 No.1999 Lattice Teleportation
ユーザー ecottea
提出日時 2022-07-01 23:14:18
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 121 ms / 2,000 ms
コード長 11,869 bytes
コンパイル時間 3,617 ms
コンパイル使用メモリ 238,248 KB
実行使用メモリ 10,088 KB
最終ジャッジ日時 2024-11-26 07:06:55
合計ジャッジ時間 6,092 ms
ジャッジサーバーID
(参考情報)
judge1 / judge5
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ファイルパターン 結果
sample AC * 4
other AC * 29
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ソースコード

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プレゼンテーションモードにする

#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = acos(-1);
const vi DX = { 1, 0, -1, 0 }; // 4
const vi DY = { 0, 1, 0, -1 };
int INF = 1001001001; ll INFL = 4004004004004004004LL;
double EPS = 1e-12; // 調
//
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define YES(b) {cout << ((b) ? "YES\n" : "NO\n");}
#define rep(i, n) for(int i = 0, i##_len = ll(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0; set < (1 << int(d)); ++set) // d
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define smod(n, m) ((((n) % (m)) + (m)) % (m)) // mod
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} //
#define EXIT(a) {cout << (a) << endl; exit(0);} //
//
template <class T> inline ll pow(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
//
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }
// Visual Studio
#ifdef _MSC_VER
#include "local.hpp"
// gcc
#else
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define gcd __gcd
#define dump(...)
#define dumpel(v)
#define input_from_file(f)
#define output_to_file(f)
#endif
#endif //
//--------------AtCoder --------------
#include <atcoder/all>
using namespace atcoder;
using mint = modint1000000007;
//using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);
istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>;
//----------------------------------------
//
/*
*
*
* Point<T>() : O(1)
* (0, 0)
*
* Point<T>(T x, T y) : O(1)
* (x, y)
*
* p1 == p2, p1 != p2, p1 < p2, p1 > p2, p1 <= p2, p1 >= p2 : O(1)
* x y
*
* p1 + p2, p1 - p2, c * p, p * c, p / c : O(1)
* 使
*
* T sqnorm() : O(1)
* 2
*
* double norm() : O(1)
*
*
* Point<double> normalize() : O(1)
*
*
* T dot(Point<T> p) : O(1)
* p
*
* T cross(Point<T> p) : O(1)
* p
*
* double angle(Point<T> p) : O(1)
* p
*/
template <class T> struct Point {
// x y
T x, y;
//
Point() : x(0), y(0) {}
Point(T x_, T y_) : x(x_), y(y_) {}
//
Point(const Point& old) = default;
Point& operator=(const Point& other) = default;
//
operator Point<ll>() const { return Point<ll>((ll)x, (ll)y); }
operator Point<double>() const { return Point<double>((double)x, (double)y); }
//
friend istream& operator>>(istream& is, Point& p) { is >> p.x >> p.y; return is; }
friend ostream& operator<<(ostream& os, const Point& p) { os << '(' << p.x << ',' << p.y << ')'; return os; }
// x
bool operator==(const Point& p) const { return x == p.x && y == p.y; }
bool operator!=(const Point& p) const { return !(*this == p); }
bool operator<(const Point& p) const { return x == p.x ? y < p.y : x < p.x; }
bool operator>=(const Point& p) const { return !(*this < p); }
bool operator>(const Point& p) const { return x == p.x ? y > p.y : x > p.x; }
bool operator<=(const Point& p) const { return !(*this > p); }
//
Point& operator+=(const Point& p) { x += p.x; y += p.y; return *this; }
Point operator+(const Point& p) const { Point q(*this); return q += p; }
Point& operator-=(const Point& p) { x -= p.x; y -= p.y; return *this; }
Point operator-(const Point& p) const { Point q(*this); return q -= p; }
Point& operator*=(const T& c) { x *= c; y *= c; return *this; }
Point operator*(const T& c) const { Point q(*this); return q *= c; }
Point& operator/=(const T& c) { x /= c; y /= c; return *this; }
Point operator/(const T& c) const { Point q(*this); return q /= c; }
friend Point operator*(const T& sc, const Point& p) { return p * sc; }
//
T sqnorm() const { return x * x + y * y; }
double norm() const { return sqrt((double)x * x + (double)y * y); }
Point<double> normalize() const { return Point<double>(*this) / norm(); }
//
T dot(const Point& other) const { return x * other.x + y * other.y; }
T cross(const Point& other) const { return x * other.y - y * other.x; }
double angle(const Point& other) const {
return atan2(this->cross(other), this->dot(other));
}
};
//
/*
* {a, b} : 2 a, b a → b
*
*
*/
template <class T> using Line = pair<Point<T>, Point<T>>;
//
/*
* {p, r} : p r
*/
template <class T> using Circle = pair<Point<T>, T>;
//
/*
* Polygon(p[0..n]) : n
*/
template <class T> using Polygon = vector<Point<T>>;
//O(1)
/*
* a b c (-π,π]
* a b true false
* a b true false
* c 便 +∞
*/
template <class T>
bool compare_argument(const Point<T>& a, const Point<T>& b, const Point<T>& c) {
// verify : https://judge.yosupo.jp/problem/sort_points_by_argument
// a = c a (∞) b (≦∞)
if (a == c) {
return false;
}
// b = c a (∞) b (∞)
if (b == c) {
return true;
}
// a, b c
// (0, π]
bool posQ_a = (a.y > 0 || (a.y == 0 && a.x < 0));
bool posQ_b = (b.y > 0 || (b.y == 0 && b.x < 0));
//
if (!posQ_a && posQ_b) {
return true;
}
if (posQ_a && !posQ_b) {
return false;
}
// a, b c π
// c
ll area = (a - c).cross(b - c);
bool res;
if (area != 0) {
res = area > 0;
}
else {
//
res = (a - c).sqnorm() < (b - c).sqnorm();
}
return res;
}
//O(n)
/*
* n poly 2
*
* n
*
*/
template <class T> T area_polygon(const Polygon<T>& poly) {
// verify : https://onlinejudge.u-aizu.ac.jp/courses/library/4/CGL/all/CGL_3_A
int n = sz(poly);
T res = 0;
rep(i, n) res += poly[i].cross(poly[(i + 1) % n]);
// 2
return res;
}
//O(n log n)
/*
* n p c (-π,π]
* c
* c 便 +∞
*
*
*/
template <class T> void argument_sort(vector<Point<T>>& p, const Point<T>& c) {
// verify : https://judge.yosupo.jp/problem/sort_points_by_argument
auto compare = [&](Point<T> a, Point<T> b) {
return compare_argument(a, b, c);
};
sort(all(p), compare);
}
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
int n;
cin >> n;
vector<Point<ll>> vs;
rep(i, n) {
ll a, b;
cin >> a >> b;
if (a == 0 && b == 0) continue;
vs.push_back({ a, b });
vs.push_back({ -a, -b });
}
argument_sort(vs, { 0, 0 });
dump(vs);
vector<Point<mint>> ps;
ps.push_back({0, 0});
repe(v, vs) ps.push_back(ps.back() + Point<mint>(v.x, v.y));
ps.pop_back();
dump(ps);
mint res = area_polygon(ps) + 2;
dump(res);
repe(v, vs) {
ll g = gcd(abs(v.x), abs(v.y));
dump(g);
res += g;
}
res /= 2;
cout << res << endl;
}
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