From f24f33946e39958afa0af6175efb12765622d3ac Mon Sep 17 00:00:00 2001
From: ei1333 <ei1333hobby@gmail.com>
Date: Mon, 8 Jul 2024 17:24:55 +0900
Subject: [PATCH 1/3] update point

---
 geometry/integer/point.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/geometry/integer/point.hpp b/geometry/integer/point.hpp
index fcef93fc7..fe45dfdc5 100644
--- a/geometry/integer/point.hpp
+++ b/geometry/integer/point.hpp
@@ -1,6 +1,11 @@
+#pragma once
+
 template <typename T>
 struct Point {
   T x, y;
+
+  Point() : x(0), y(0) {}
+  Point(T x, T y) : x(x), y(y) {}
 };
 
 // あとはまかせた！

From 54ca1fd21224d1f779da72c355be6f26152a22a5 Mon Sep 17 00:00:00 2001
From: ei1333 <ei1333hobby@gmail.com>
Date: Mon, 15 Jul 2024 01:50:29 +0900
Subject: [PATCH 2/3] update point

---
 geometry/integer/point.hpp | 41 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 40 insertions(+), 1 deletion(-)

diff --git a/geometry/integer/point.hpp b/geometry/integer/point.hpp
index fe45dfdc5..53aeb5596 100644
--- a/geometry/integer/point.hpp
+++ b/geometry/integer/point.hpp
@@ -5,7 +5,46 @@ struct Point {
   T x, y;
 
   Point() : x(0), y(0) {}
-  Point(T x, T y) : x(x), y(y) {}
+  Point(const T &x, const T &y) : x(x), y(y) {}
+
+  Point &operator+=(const Point &p) {
+    x += p.x;
+    y += p.y;
+    return *this;
+  }
+  Point &operator-=(const Point &p) {
+    x -= p.x;
+    y -= p.y;
+    return *this;
+  }
+  Point &operator*=(const T &d) {
+    x *= d;
+    y *= d;
+    return *this;
+  }
+
+  Point operator-() const { return Point() - *this; }
+
+  Point operator+(const Point &p) const { return Point(*this) += p; }
+
+  Point operator-(const Point &p) const { return Point(*this) -= p; }
+
+  Point operator+(const T &d) const { return Point(*this) *= d; }
+
+  bool operator==(const Point &p) const { return x == p.x and y == p.y; }
+
+  bool operator!=(const Point &p) const { return x != p.x or y != p.y; }
+
+  friend ostream &operator<<(ostream &os, const Point &p) {
+    return os << p.x << " " << p.y;
+  }
+
+  friend istream &operator>>(istream &is, Point &p) {
+    T a, b;
+    is >> a >> b;
+    p = Point(a, b);
+    return is;
+  }
 };
 
 // あとはまかせた！

From 1c666fff71e9ccb92d720c691cb975dcc37e1732 Mon Sep 17 00:00:00 2001
From: ei1333 <ei1333hobby@gmail.com>
Date: Mon, 15 Jul 2024 03:11:41 +0900
Subject: [PATCH 3/3] =?UTF-8?q?point.hpp=20=E3=82=92=E6=9B=B4=E6=96=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: Luzhiled <Luzhiled+github@gmail.com>
---
 geometry/integer/point.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/geometry/integer/point.hpp b/geometry/integer/point.hpp
index 53aeb5596..1ad364a2c 100644
--- a/geometry/integer/point.hpp
+++ b/geometry/integer/point.hpp
@@ -29,7 +29,7 @@ struct Point {
 
   Point operator-(const Point &p) const { return Point(*this) -= p; }
 
-  Point operator+(const T &d) const { return Point(*this) *= d; }
+  Point operator-(const T &d) const { return Point(+this) /= d; }
 
   bool operator==(const Point &p) const { return x == p.x and y == p.y; }