結果
| 問題 | No.245 貫け！ |
| ユーザー |
 t98slider
|
| 提出日時 | 2021-10-21 02:59:09 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 23 ms / 5,000 ms |
| コード長 | 7,571 bytes |
| コンパイル時間 | 1,816 ms |
| コンパイル使用メモリ | 179,684 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-09-20 06:50:22 |
| 合計ジャッジ時間 | 2,835 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 16 |
コンパイルメッセージ
main.cpp: In function 'std::pair<geometry::point, geometry::point> geometry::getCrossPoint(circle, line)':
main.cpp:126:5: warning: control reaches end of non-void function [-Wreturn-type]
126 | }
| ^
ソースコード
#include <bits/stdc++.h>#define all(v) v.begin(), v.end()#define rall(v) v.rbegin(), v.rend()#define rep(i,n) for(int i=0;i<(int)(n);i++)#define drep(i,j,n) for(int i=0;i<(int)(n-1);i++)for(int j=i+1;j<(int)(n);j++)#define trep(i,j,k,n) for(int i=0;i<(int)(n-2);i++)for(int j=i+1;j<(int)(n-1);j++)for(int k=j+1;k<(int)(n);k++)#define codefor int test;scanf("%d",&test);while(test--)#define INT(...) int __VA_ARGS__;in(__VA_ARGS__)#define LL(...) ll __VA_ARGS__;in(__VA_ARGS__)#define yes(ans) if(ans)printf("yes\n");else printf("no\n")#define Yes(ans) if(ans)printf("Yes\n");else printf("No\n")#define YES(ans) if(ans)printf("YES\n");else printf("NO\n")#define popcount(v) __builtin_popcount(v)#define vector2d(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))#define vector3d(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))using namespace std;using ll = long long;template<class T> using rpriority_queue = priority_queue<T, vector<T>, greater<T>>;const int MOD=1000000007;const int MOD2=998244353;const int INF=1<<30;const ll INF2=1LL<<60;void scan(int& a){scanf("%d",&a);}void scan(long long& a){scanf("%lld",&a);}template<class T,class L>void scan(pair<T, L>& p){scan(p.first);scan(p.second);}template<class T,class U,class V>void scan(tuple<T,U,V>& p){scan(get<0>(p));scan(get<1>(p));scan(get<2>(p));}template<class T> void scan(T& a){cin>>a;}template<class T> void scan(vector<T>& vec){for(auto&& it:vec)scan(it);}void in(){}template <class Head, class... Tail> void in(Head& head, Tail&... tail){scan(head);in(tail...);}void print(const int& a){printf("%d",a);}void print(const long long& a){printf("%lld",a);}void print(const double& a){printf("%.15lf",a);}template<class T,class L>void print(const pair<T, L>& p){print(p.first);putchar(' ');print(p.second);}template<class T> void print(const T& a){cout<<a;}template<class T> void print(const vector<T>& vec){if(vec.empty())return;print(vec[0]);for(auto it=vec.begin();++it!= vec.end();){putchar(' ');print(*it);}}void out(){putchar('\n');}template<class T> void out(const T& t){print(t);putchar('\n');}template <class Head, class... Tail> void out(const Head& head,const Tail&... tail){print(head);putchar(' ');out(tail...);}template<class T> void dprint(const T& a){cerr<<a;}template<class T> void dprint(const vector<T>& vec){if(vec.empty())return;cerr<<vec[0];for(auto it=vec.begin();++it!= vec.end();){cerr<<" "<<*it;}}void debug(){cerr<<endl;}template<class T> void debug(const T& t){dprint(t);cerr<<endl;}template <class Head, class... Tail> void debug(const Head& head, const Tail&... tail){dprint(head);cerr<<" ";debug(tail...);}ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }ll modpow(ll a, ll b, ll p){ ll ans = 1; while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; }ll modinv(ll a, ll m) {ll b = m, u = 1, v = 0;while (b) {ll t = a / b;a -= t * b; swap(a, b);u -= t * v; swap(u, v);}u %= m;if (u < 0) u += m;returnu;}ll updivide(ll a,ll b){return (a+b-1)/b;}template<class T> void chmax(T &a,const T b){if(b>a)a=b;}template<class T> void chmin(T &a,const T b){if(b<a)a=b;}namespace geometry{double EPS=1e-10;static const int COUNTER_CLOCKWISE = 1;static const int CLOCKWISE = -1;static const int ONLINE_BACK = 2;static const int ONLINE_FRONT = -2;static const int ON_SEGMENT = 0;struct point{double x,y;point(double x=0,double y=0): x(x),y(y){}point operator + (const point &p){return point(x+p.x,y+p.y);}point operator - (const point &p){return point(x-p.x,y-p.y);}point operator * (const double k){return point(x*k,y*k);}point operator / (const double k){return point(x/k,y/k);}double norm(){return sqrt(x*x+y*y);}double sqnorm(){return x*x+y*y;}};void scan(point& p){scanf("%lf %lf",&p.x,&p.y);}void print(const point& p){printf("%.15lf %.15lf",p.x,p.y);}//ベクトルの内積を計算するdouble dot(point a,point b){return a.x*b.x+a.y*b.y;}//ベクトルの外積を計算するdouble cross(point a,point b){return a.x*b.y-a.y*b.x;}struct line{point p1,p2;point base=(p2-p1)/(p2-p1).norm();line(point p1,point p2): p1(p1),p2(p2){}//pから直線p1p2に垂線を引いた際の交点point project(point p){return p1+base*dot(p-p1,base);}//pから直線p1p2に対して線対称の位置にある点point reflect(point p){return p+(project(p)-p)*2;}//直線p1p2に対して点pが反時計回りか時計回りか直線上かを判定するint ccw(point p){point a=p-p1;if(cross(base,a)>EPS)return COUNTER_CLOCKWISE;if(cross(base,a)<-EPS)return CLOCKWISE;if(dot(base,a)<-EPS)return ONLINE_BACK;if((p2-p1).sqnorm()<a.sqnorm())return ONLINE_FRONT;return ON_SEGMENT;}};struct circle{point c;double r;circle(point c=point(),double r=0.0): c(c),r(r){}};//線分s1とs2の交差判定bool intersect(line s1,line s2){return (s1.ccw(s2.p1)*s1.ccw(s2.p2)<=0);}//線分s1と線分s2の交点point getCrossPoint(line s1,line s2){double d1=abs(cross(s2.base,s1.p1-s2.p1));double d2=abs(cross(s2.base,s1.p2-s2.p1));double t=d1/(d1+d2);return s1.p1+(s1.p2-s1.p1)*t;}//円と直線s1の交点//交点が2つの場合はx座標が小さい方が先に出力//x座標が同じ場合はy座標が小さいものが先に出力//交点が1つの場合は同じ座標が2つ出力pair<point,point> getCrossPoint(circle c,line l){point pr=l.project(c.c);double prl=(pr-c.c).sqnorm();if(prl<=c.r*c.r){double t=sqrt(c.r*c.r-prl);if(abs(l.base.x)<EPS){if(l.base.y>0)return make_pair(pr-l.base*t,pr+l.base*t);else return make_pair(pr+l.base*t,pr-l.base*t);}else{if(l.base.x>0)return make_pair(pr-l.base*t,pr+l.base*t);else return make_pair(pr+l.base*t,pr-l.base*t);}}}//点と点の距離double getDistance(point a,point b){return (b-a).norm();}//直線と点の距離double getDistance(line l,point p){return abs(cross(l.p2-l.p1,p-l.p1))/(l.p2-l.p1).norm();}//線分と点の距離double getDistanceSP(line s,point p){if(dot(s.p2-s.p1,p-s.p1)<0)return getDistance(s.p1,p);if(dot(s.p1-s.p2,p-s.p2)<0)return getDistance(s.p2,p);return getDistance(s,p);}//線分と線分の距離double getDistance(line s1,line s2){if(intersect(s1,s2))return 0.0;return min(min(getDistanceSP(s1,s2.p1),getDistanceSP(s1,s2.p2)),min(getDistanceSP(s2,s1.p1),getDistanceSP(s2,s1.p2)));}};int main(){using namespace geometry;INT(n);vector<line> A;vector<pair<int,int>> vec;rep(i,n){INT(a,b,c,d);vec.push_back({a,b});vec.push_back({c,d});A.push_back(line(point(a,b),point(c,d)));}int ans=0,cnt;drep(i,j,vec.size()){line s(point(vec[i].first,vec[i].second),point(vec[j].first,vec[j].second));cnt=0;rep(k,n){cnt+=(intersect(s,A[k]));}chmax(ans,cnt);}out(ans);}