結果
問題 | No.2628 Shrinkage |
ユーザー | ゆにぽけ |
提出日時 | 2024-02-16 21:28:29 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 6,472 bytes |
コンパイル時間 | 1,508 ms |
コンパイル使用メモリ | 140,148 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-09-28 19:43:49 |
合計ジャッジ時間 | 2,441 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 2 ms
6,820 KB |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | AC | 1 ms
6,816 KB |
testcase_27 | WA | - |
ソースコード
#include <iostream> #include <vector> #include <algorithm> #include <array> #include <iterator> #include <string> #include <cctype> #include <cstring> #include <cstdlib> #include <cassert> #include <cmath> #include <ctime> #include <iomanip> #include <numeric> #include <stack> #include <queue> #include <map> #include <unordered_map> #include <set> #include <unordered_set> #include <bitset> #include <random> #include <utility> #include <functional> using namespace std; template<class T> inline bool chmin(T &a,const T &b) { if(a > b) { a = b; return true; } return false; } template<class T> inline bool chmax(T &a,const T &b) { if(a < b) { a = b; return true; } return false; } template<class T> void print(const vector<T> &V) { for(int i = 0;i < (int)V.size();i++) { cerr << V[i] << (i + 1 == (int)V.size() ? "\n":" "); } } #include <iostream> #include <vector> #include <algorithm> #include <cstdlib> #include <cassert> #include <cmath> using namespace std; namespace geometry { using real = double; const real EPS = 1e-9; bool EQ(real a,real b) { return abs(a - b) < EPS; } struct Point { real x,y; Point(real x_ = 0,real y_ = 0) : x(x_),y(y_) {} Point operator-() const { return Point(-x,-y); } Point operator+(const Point &rhs) const { return Point(x + rhs.x,y + rhs.y); } Point operator-(const Point &rhs) const { return Point(x - rhs.x,y - rhs.y); } Point operator*(const real k) const { return Point(x * k,y * k); } Point operator/(const real k) const { assert(!EQ(0,k)); return Point(x / k,y / k); } bool operator<(const Point &rhs) const { return EQ(x,rhs.x) ? y < rhs.y : x < rhs.x; } bool operator==(const Point &rhs) const { return EQ(x,rhs.x) && EQ(y,rhs.y); } }; istream &operator>>(istream &is,Point &p) { return is >> p.x >> p.y; } ostream &operator<<(ostream &os,const Point &p) { return os << p.x << " " << p.y; } struct Line { Point p1,p2; Line(Point p1_ = Point(),Point p2_ = Point()) : p1(p1_),p2(p2_) {} }; struct Segment : Line { Segment(Point p1_ = Point(),Point p2_ = Point()) : Line(p1_,p2_) {} }; struct Circle { Point O; real r; Circle(Point O_ = Point(),real r_ = 0) : O(O_),r(r_) {} }; using Polygon = vector<Point>; Point vec(const Line &l) { return l.p2 - l.p1; } real norm2(const Point &p) { return p.x * p.x + p.y * p.y; } real abs(const Point &p) { return hypot(p.x,p.y); } real dot(const Point &a,const Point &b) { return a.x * b.x + a.y * b.y; } real cross(const Point &a,const Point &b) { return a.x * b.y - a.y * b.x; } Point rotate(const Point &p,const real &theta) { return Point(p.x * cos(theta) - p.y * sin(theta), p.x * sin(theta) + p.y * cos(theta)); } Point rotate(const Point &a,const Point &p,const real &theta) { Point q = rotate(p - a,theta); return a + q; } enum { ONLINE_FRONT = -2, CLOCKWISE= -1, ON_SEGMENT = 0, COUNTER_CLOCKWISE = 1, ONLINE_BACK = 2 }; int ccw(const Point &a,const Point &b) { real C = cross(a,b); return C > EPS ? COUNTER_CLOCKWISE : C < -EPS ? CLOCKWISE : dot(a,b) < -EPS ? ONLINE_BACK : norm2(b) - norm2(a) > EPS ? ONLINE_FRONT : ON_SEGMENT; } int ccw(const Point &a,const Point &b,const Point &c) { return ccw(b - a,c - a); } bool orthogonal(const Point &a,const Point &b) { return EQ(dot(a,b),0); } bool orthogonal(const Line &a,const Line &b) { return orthogonal(vec(a),vec(b)); } bool parallel(const Point &a,const Point &b) { return EQ(cross(a,b),0); } bool parallel(const Line &a,const Line &b) { return parallel(vec(a),vec(b)); } bool intersect(const Line &l,const Point &p) { return parallel(vec(l),p - l.p1); } bool intersect(const Segment &s,const Point &p) { return ccw(s.p1,s.p2,p) == ON_SEGMENT; } bool intersect(const Segment &a,const Segment &b) { return ccw(a.p1,a.p2,b.p1) * ccw(a.p1,a.p2,b.p2) <= 0 && ccw(b.p1,b.p2,a.p1) * ccw(b.p1,b.p2,a.p2) <= 0; } Point cross_point(const Line &a,const Line &b) { real s1 = cross(vec(a),b.p1 - a.p1); real s2 = -cross(vec(a),b.p2 - a.p1); return b.p1 + vec(b) * (s1 / (s1 + s2)); } enum { OUT, ON, IN }; Polygon convex_hull(Polygon P,bool ONLINE = false,bool SORT = false) { if((int)P.size() <= 2) { return P; } sort(P.begin(),P.end()); Polygon res(2 * P.size()); int sz = 0; real threshold = EPS; if(ONLINE) { threshold = -EPS; } for(int i = 0;i < (int)P.size();i++) { while(sz >= 2 && cross(res[sz - 1] - res[sz - 2],P[i] - res[sz - 1]) < threshold) { sz--; } res[sz++] = P[i]; } for(int i = (int)P.size() - 2,t = sz + 1;i >= 0;i--) { while(sz >= t && cross(res[sz - 1] - res[sz - 2],P[i] - res[sz - 1]) < threshold) { sz--; } res[sz++] = P[i]; } res.resize(sz - 1); if(SORT) { int mi = 0; for(int i = 1;i < (int)res.size();i++) { if((EQ(res[mi].y,res[i].y) && res[mi].x > res[i].x) || res[mi].y > res[i].y) { mi = i; } } rotate(res.begin(),res.begin() + mi,res.end()); } return res; } int convex_contain(const Polygon &P,const Point &p) { if(P[0] == p) { return ON; } int L = 0,R = (int)P.size(); while(R - L > 1) { int M = (L + R) / 2; if(ccw(P[0],P[M],p) == CLOCKWISE) { R = M; } else { L = M; } } if(R == 1) { return OUT; } if(L + 1 == (int)P.size()) { if(intersect(Segment(P[0],P[L]),p)) { return ON; } return OUT; } if(L == 1) { if(intersect(Segment(P[0],P[L]),p)) { return ON; } } real tri = cross(P[L] - p,P[R] - p); return EQ(tri,0) ? ON : tri < -EPS ? OUT : IN; } }; //namespace geometry void Main() { geometry::Polygon P(2),Q(2); for(int i = 0;i < 2;i++) { cin >> P[i]; } for(int i = 0;i < 2;i++) { cin >> Q[i]; } geometry::Line A(P[0],Q[0]),B(P[1],Q[1]); if(P[0] == Q[0] || P[1] == Q[1]) { cout << "No\n"; return; } geometry::Point C = geometry::cross_point(A,B); vector<long double> R(2); for(int i = 0;i < 2;i++) { if(geometry::norm2(C - P[i]) - geometry::norm2(Q[i] - P[i]) > geometry::EPS) { R[i] = geometry::norm2(Q[i] - P[i]) / geometry::norm2(C - P[i]); } else { cout << "No\n"; return; } } cout << (geometry::EQ(R[0],R[1]) ? "Yes\n":"No\n"); } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int tt = 1; cin >> tt; while(tt--) Main(); }