This documentation is automatically generated by online-judge-tools/verification-helper
// competitive-verifier: PROBLEM http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=CGL_1_C
#include "../../template/template.hpp"
#include "../../geometry/ccw.hpp"
using namespace geometry;
int main() {
Point p1, p2;
cin >> p1 >> p2;
int Q;
cin >> Q;
while(Q--) {
Point p3;
cin >> p3;
auto t = ccw(p1, p2, p3);
if(t == 1) cout << "COUNTER_CLOCKWISE\n";
else if(t == -1) cout << "CLOCKWISE\n";
else if(t == 2) cout << "ONLINE_BACK\n";
else if(t == -2) cout << "ONLINE_FRONT\n";
else cout << "ON_SEGMENT\n";
}
}
#line 1 "test/verify/aoj-cgl-1-c.test.cpp"
// competitive-verifier: PROBLEM http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=CGL_1_C
#line 1 "template/template.hpp"
#include<bits/stdc++.h>
using namespace std;
using int64 = long long;
const int64 infll = (1LL << 62) - 1;
const int inf = (1 << 30) - 1;
struct IoSetup {
IoSetup() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(10);
cerr << fixed << setprecision(10);
}
} iosetup;
template< typename T1, typename T2 >
ostream &operator<<(ostream &os, const pair< T1, T2 >& p) {
os << p.first << " " << p.second;
return os;
}
template< typename T1, typename T2 >
istream &operator>>(istream &is, pair< T1, T2 > &p) {
is >> p.first >> p.second;
return is;
}
template< typename T >
ostream &operator<<(ostream &os, const vector< T > &v) {
for(int i = 0; i < (int) v.size(); i++) {
os << v[i] << (i + 1 != v.size() ? " " : "");
}
return os;
}
template< typename T >
istream &operator>>(istream &is, vector< T > &v) {
for(T &in : v) is >> in;
return is;
}
template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }
template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }
template< typename T = int64 >
vector< T > make_v(size_t a) {
return vector< T >(a);
}
template< typename T, typename... Ts >
auto make_v(size_t a, Ts... ts) {
return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));
}
template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
t = v;
}
template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
for(auto &e : t) fill_v(e, v);
}
template< typename F >
struct FixPoint : F {
explicit FixPoint(F &&f) : F(forward< F >(f)) {}
template< typename... Args >
decltype(auto) operator()(Args &&... args) const {
return F::operator()(*this, forward< Args >(args)...);
}
};
template< typename F >
inline decltype(auto) MFP(F &&f) {
return FixPoint< F >{forward< F >(f)};
}
#line 4 "test/verify/aoj-cgl-1-c.test.cpp"
#line 2 "geometry/base.hpp"
namespace geometry {
using Real = double;
const Real EPS = 1e-8;
const Real PI = acos(static_cast< Real >(-1));
enum {
OUT, ON, IN
};
inline int sign(const Real &r) {
return r <= -EPS ? -1 : r >= EPS ? 1 : 0;
}
inline bool equals(const Real &a, const Real &b) {
return sign(a - b) == 0;
}
}
#line 3 "geometry/point.hpp"
namespace geometry {
using Point = complex< Real >;
istream &operator>>(istream &is, Point &p) {
Real a, b;
is >> a >> b;
p = Point(a, b);
return is;
}
ostream &operator<<(ostream &os, const Point &p) {
return os << real(p) << " " << imag(p);
}
Point operator*(const Point &p, const Real &d) {
return Point(real(p) * d, imag(p) * d);
}
// rotate point p counterclockwise by theta rad
Point rotate(Real theta, const Point &p) {
return Point(cos(theta) * real(p) - sin(theta) * imag(p), sin(theta) * real(p) + cos(theta) * imag(p));
}
Real cross(const Point &a, const Point &b) {
return real(a) * imag(b) - imag(a) * real(b);
}
Real dot(const Point &a, const Point &b) {
return real(a) * real(b) + imag(a) * imag(b);
}
bool compare_x(const Point &a, const Point &b) {
return equals(real(a), real(b)) ? imag(a) < imag(b) : real(a) < real(b);
}
bool compare_y(const Point &a, const Point &b) {
return equals(imag(a), imag(b)) ? real(a) < real(b) : imag(a) < imag(b);
}
using Points = vector< Point >;
}
#line 3 "geometry/ccw.hpp"
namespace geometry {
// http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=CGL_1_C
constexpr int COUNTER_CLOCKWISE = +1;
constexpr int CLOCKWISE = -1;
constexpr int ONLINE_BACK = +2; // c-a-b
constexpr int ONLINE_FRONT = -2; // a-b-c
constexpr int ON_SEGMENT = 0; // a-c-b
int ccw(const Point &a, Point b, Point c) {
b = b - a, c = c - a;
if(sign(cross(b, c)) == +1) return COUNTER_CLOCKWISE;
if(sign(cross(b, c)) == -1) return CLOCKWISE;
if(sign(dot(b, c)) == -1) return ONLINE_BACK;
if(norm(b) < norm(c)) return ONLINE_FRONT;
return ON_SEGMENT;
}
}
#line 6 "test/verify/aoj-cgl-1-c.test.cpp"
using namespace geometry;
int main() {
Point p1, p2;
cin >> p1 >> p2;
int Q;
cin >> Q;
while(Q--) {
Point p3;
cin >> p3;
auto t = ccw(p1, p2, p3);
if(t == 1) cout << "COUNTER_CLOCKWISE\n";
else if(t == -1) cout << "CLOCKWISE\n";
else if(t == 2) cout << "ONLINE_BACK\n";
else if(t == -2) cout << "ONLINE_FRONT\n";
else cout << "ON_SEGMENT\n";
}
}
Env | Name | Status | Elapsed | Memory |
---|---|---|---|---|
g++ | 00_int_00.in | AC | 6 ms | 4 MB |
g++ | 00_int_01.in | AC | 6 ms | 4 MB |
g++ | 00_int_02.in | AC | 6 ms | 4 MB |
g++ | 00_int_03.in | AC | 6 ms | 4 MB |
g++ | 00_int_04.in | AC | 6 ms | 4 MB |
g++ | 00_int_05.in | AC | 6 ms | 4 MB |
g++ | 01_real_00.in | AC | 6 ms | 4 MB |
g++ | 01_real_01.in | AC | 6 ms | 4 MB |
g++ | 02_online_00.in | AC | 6 ms | 4 MB |
g++ | 02_online_01.in | AC | 6 ms | 4 MB |
g++ | 02_online_02.in | AC | 6 ms | 4 MB |
g++ | 02_online_03.in | AC | 6 ms | 4 MB |
g++ | 03_horizontal_00.in | AC | 6 ms | 4 MB |
g++ | 03_horizontal_01.in | AC | 6 ms | 4 MB |
g++ | 04_vertical_00.in | AC | 6 ms | 4 MB |
g++ | 04_vertical_01.in | AC | 6 ms | 4 MB |
g++ | 05_rand_00.in | AC | 6 ms | 4 MB |
g++ | 05_rand_01.in | AC | 6 ms | 4 MB |
g++ | 05_rand_02.in | AC | 6 ms | 4 MB |
g++ | 05_rand_03.in | AC | 6 ms | 4 MB |
g++ | 05_rand_04.in | AC | 6 ms | 4 MB |
g++ | 05_rand_05.in | AC | 6 ms | 4 MB |
g++ | 05_rand_06.in | AC | 6 ms | 4 MB |
g++ | 05_rand_07.in | AC | 6 ms | 4 MB |
g++ | 05_rand_08.in | AC | 6 ms | 4 MB |
g++ | 05_rand_09.in | AC | 6 ms | 4 MB |
g++ | 05_rand_10.in | AC | 6 ms | 4 MB |
g++ | 05_rand_11.in | AC | 6 ms | 4 MB |
g++ | 06_online_00.in | AC | 6 ms | 4 MB |
g++ | 06_online_01.in | AC | 6 ms | 4 MB |
g++ | 07_extreme_00.in | AC | 6 ms | 4 MB |
g++ | 07_extreme_01.in | AC | 6 ms | 4 MB |
clang++ | 00_int_00.in | AC | 7 ms | 4 MB |
clang++ | 00_int_01.in | AC | 6 ms | 4 MB |
clang++ | 00_int_02.in | AC | 6 ms | 4 MB |
clang++ | 00_int_03.in | AC | 6 ms | 4 MB |
clang++ | 00_int_04.in | AC | 6 ms | 4 MB |
clang++ | 00_int_05.in | AC | 6 ms | 4 MB |
clang++ | 01_real_00.in | AC | 6 ms | 4 MB |
clang++ | 01_real_01.in | AC | 6 ms | 4 MB |
clang++ | 02_online_00.in | AC | 6 ms | 4 MB |
clang++ | 02_online_01.in | AC | 6 ms | 4 MB |
clang++ | 02_online_02.in | AC | 6 ms | 4 MB |
clang++ | 02_online_03.in | AC | 6 ms | 4 MB |
clang++ | 03_horizontal_00.in | AC | 6 ms | 4 MB |
clang++ | 03_horizontal_01.in | AC | 6 ms | 4 MB |
clang++ | 04_vertical_00.in | AC | 6 ms | 4 MB |
clang++ | 04_vertical_01.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_00.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_01.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_02.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_03.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_04.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_05.in | AC | 7 ms | 4 MB |
clang++ | 05_rand_06.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_07.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_08.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_09.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_10.in | AC | 6 ms | 4 MB |
clang++ | 05_rand_11.in | AC | 6 ms | 4 MB |
clang++ | 06_online_00.in | AC | 6 ms | 4 MB |
clang++ | 06_online_01.in | AC | 6 ms | 4 MB |
clang++ | 07_extreme_00.in | AC | 6 ms | 4 MB |
clang++ | 07_extreme_01.in | AC | 6 ms | 4 MB |