Submission #519499

#	Time	Username	Problem	Language	Result	Execution time	Memory
519499		rrrr10000	Dragon 2 (JOI17_dragon2)	C++14	100 / 100	631 ms	9664 KiB

dragon2

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n)  for(long long i=0;i<(long long)(n);i++)
#define REP(i,k,n) for(long long i=k;i<(long long)(n);i++)
#define pb emplace_back
#define lb(v,k) (lower_bound(all(v),(k))-v.begin())
#define ub(v,k) (upper_bound(all(v),(k))-v.begin())
#define fi first
#define se second
#define pi M_PI
#define PQ(T) priority_queue<T>
#define SPQ(T) priority_queue<T,vector<T>,greater<T>>
#define dame(a) {out(a);return 0;}
#define decimal cout<<fixed<<setprecision(15);
#define all(a) a.begin(),a.end()
#define rsort(a) {sort(all(a));reverse(all(a));}
#define dupli(a) {sort(all(a));a.erase(unique(all(a)),a.end());}
#define popcnt __builtin_popcountll
typedef long long ll;
typedef pair<ll,ll> P;
typedef tuple<ll,ll,ll> PP;
typedef tuple<ll,ll,ll,ll> PPP;
using vi=vector<ll>;
using vvi=vector<vi>;
using vvvi=vector<vvi>;
using vvvvi=vector<vvvi>;
using vp=vector<P>;
using vvp=vector<vp>;
using vb=vector<bool>;
using vvb=vector<vb>;
const ll inf=4001001001001001001;
const ll INF=1001001001;
const ll mod=1000000007;
const double eps=1e-10;
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
template<class T> void out(T a){cout<<a<<'\n';}
template<class T> void outp(T a){cout<<'('<<a.fi<<','<<a.se<<')'<<'\n';}
template<class T> void outvp(T v){rep(i,v.size())cout<<'('<<v[i].fi<<','<<v[i].se<<')';cout<<'\n';}
template<class T> void outvvp(T v){rep(i,v.size())outvp(v[i]);}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<'\n';}
template<class T> void outvv(T v){rep(i,v.size())outv(v[i]);}
template<class T> bool isin(T x,T l,T r){return (l)<=(x)&&(x)<=(r);}
template<class T> void yesno(T b){if(b)out("yes");else out("no");}
template<class T> void YesNo(T b){if(b)out("Yes");else out("No");}
template<class T> void YESNO(T b){if(b)out("YES");else out("NO");}
template<class T> void outset(T s){auto itr=s.begin();while(itr!=s.end()){if(itr!=s.begin())cout<<' ';cout<<*itr;itr++;}cout<<'\n';}
void outs(ll a,ll b){if(a>=inf-100)out(b);else out(a);}
ll gcd(ll a,ll b){if(b==0)return a;return gcd(b,a%b);}
ll modpow(ll a,ll b){ll res=1;a%=mod;while(b){if(b&1)res=res*a%mod;a=a*a%mod;b>>=1;}return res;}
inline ll readll() {
    ll x = 0;
    int neg=1;
    char ch = getchar_unlocked();
    while (ch < '0' || ch > '9'){
        if(ch=='-')neg=-1;
        ch = getchar_unlocked();
    }
    while (ch >= '0' && ch <= '9'){
		x = (x << 3) + (x << 1) + ch - '0';
		ch = getchar_unlocked();
	}
    return x*neg;
}
struct Point{
    ll x,y;
    Point(){}
    Point(ll a,ll b):x(a),y(b){}
    bool ccw(Point a,Point b){
        ll dx1=x-a.x,dy1=y-a.y;
        ll dx2=b.x-a.x,dy2=b.y-a.y;
        return dx1*dy2-dx2*dy1>0;
    }
};
class BIT{
    vi bit;ll n;
    ll sum(ll i){
        ll res=0;
        for(;i;i-=i&-i)res+=bit[i];
        return res;
    }
public:
    BIT(ll n_):n(n_){bit=vi(n+1);}
    void add(ll i,ll x){
        for(i++;i<=n;i+=i&-i)bit[i]+=x;
    }
    ll get(ll a,ll b){
        if(b<=a)return 0ll;
        return sum(b)-sum(a);
    }
    ll solve(ll x){ //sum([0,r])>=x となる最小のr
        if(x<=0)return -1;
        ll l=0,len=1;while(len<n)len<<=1;
        for(;len;len>>=1)if(l+len<n&&bit[l+len]<x){
            x-=bit[l+len];l+=len;
        }
        return l;
    }
};
const ll B=300;
int main(){
    cout<<fixed<<setprecision(20);
    ll n,m;cin>>m>>n;
    vector<vector<Point>> v(n);
    rep(i,m){
        ll a,b,c;cin>>a>>b>>c;c--;
        v[c].pb(Point(a,b));
    }
    Point a,b;
    cin>>a.x>>a.y>>b.x>>b.y;
    auto cmpy=[&](Point s,Point t){
        Point x(b.x-a.x,b.y-a.y),y(t.x-s.x,t.y-s.y);
        if(x.x*y.y==x.y*y.x){
            if(a.y==t.y)return a.x<t.x;
            return a.y<t.y;
        }
        return x.x*y.y>x.y*y.x;
    };
    ll q;cin>>q;
    rep(i,n)sort(all(v[i]),cmpy);
    vvp L(n),S(n);
    rep(i,q){
        ll a,b;cin>>a>>b;a--;b--;
        if(v[a].size()==0||v[b].size()==0)continue;
        if(v[a].size()<=B||v[b].size()>B)S[a].pb(b,i);
        else L[b].pb(a,i);
    }
    vi ans(q);
    ll cnt_id=0;
    vvi id(n);
    rep(i,n)rep(j,v[i].size())id[i].pb(cnt_id++);
    vector<pair<Point,P>> srt;
    rep(i,n)rep(j,v[i].size())srt.pb(v[i][j],P(i,j));
    // rep(i,n)rep(j,v[i].size())out(v[i][j].Angle(a,b));
    {
        auto comp=[&](pair<Point,P> s,pair<Point,P> t){
            Point x=s.fi,y=t.fi;
            if(x.ccw(a,b)){
                x.x=a.x*2-x.x;
                x.y=a.y*2-x.y;
            }
            if(y.ccw(a,b)){
                y.x=a.x*2-y.x;
                y.y=a.y*2-y.y;
            }
            return !y.ccw(a,x);
        };
        sort(all(srt),comp);
        BIT bit(m);
        rep(i,n)rep(j,v[i].size())if(!v[i][j].ccw(a,b))bit.add(id[i][j],1);
        for(auto x:srt){
            auto p=x.fi;
            // cout<<p.x<<' '<<p.y<<endl;
            ll i=x.se.fi,j=x.se.se;
            if(!p.ccw(a,b))bit.add(id[i][j],-1);
            for(auto query:S[i]){
                ll k=query.fi;
                if(p.ccw(a,b)){
                    ll l=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(l<v[k].size())l=id[k][l];
                    else l=id[k].back()+1;
                    ans[query.se]-=bit.get(l,id[k].back()+1);
                }
                else{
                    ll r=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(r<v[k].size())r=id[k][r];
                    else r=id[k].back()+1;
                    ans[query.se]-=bit.get(id[k][0],r);
                }
            }
            for(auto query:L[i]){
                ll k=query.fi;
                if(p.ccw(a,b)){
                    ll l=lower_bound(all(v[k]),a,cmpy)-v[k].begin();
                    if(l<v[k].size())l=id[k][l];
                    else l=id[k].back()+1;
                    ans[query.se]-=bit.get(l,id[k].back()+1);
                    ll r=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(r<v[k].size())r=id[k][r];
                    else r=id[k].back()+1;
                    ans[query.se]+=bit.get(id[k][0],r);
                }
                else{
                    ll l=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(l<v[k].size())l=id[k][l];
                    else l=id[k].back()+1;
                    ans[query.se]+=bit.get(l,id[k].back()+1);
                    ll r=lower_bound(all(v[k]),a,cmpy)-v[k].begin();
                    if(r<v[k].size())r=id[k][r];
                    else r=id[k].back()+1;
                    ans[query.se]-=bit.get(id[k][0],r);
                }
            }
            if(p.ccw(a,b))bit.add(id[i][j],1);
        }
    }
    {
        auto comp=[&](pair<Point,P> s,pair<Point,P> t){
            Point x=s.fi,y=t.fi;
            if(x.ccw(a,b)){
                x.x=b.x*2-x.x;
                x.y=b.y*2-x.y;
            }
            if(y.ccw(a,b)){
                y.x=b.x*2-y.x;
                y.y=b.y*2-y.y;
            }
            return !y.ccw(b,x);
        };
        sort(all(srt),comp);
        BIT bit(m);
        rep(i,n)rep(j,v[i].size())if(!v[i][j].ccw(a,b))bit.add(id[i][j],1);
        for(auto x:srt){
            Point p=x.fi;
            // cout<<p.x<<' '<<p.y<<endl;
            ll i=x.se.fi,j=x.se.se;
            if(!p.ccw(a,b))bit.add(id[i][j],-1);
            for(auto query:S[i]){
                ll k=query.fi;
                if(p.ccw(a,b)){
                    ll l=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(l<v[k].size())l=id[k][l];
                    else l=id[k].back()+1;
                    ans[query.se]+=bit.get(l,id[k].back()+1);
                }
                else{
                    ll r=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(r<v[k].size())r=id[k][r];
                    else r=id[k].back()+1;
                    ans[query.se]+=bit.get(id[k][0],r);
                }
            }
            for(auto query:L[i]){
                ll k=query.fi;
                if(p.ccw(a,b)){
                    ll l=lower_bound(all(v[k]),b,cmpy)-v[k].begin();
                    if(l<v[k].size())l=id[k][l];
                    else l=id[k].back()+1;
                    ans[query.se]+=bit.get(l,id[k].back()+1);
                    ll r=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(r<v[k].size())r=id[k][r];
                    else r=id[k].back()+1;
                    ans[query.se]-=bit.get(id[k][0],r);
                }
                else{
                    ll l=lower_bound(all(v[k]),p,cmpy)-v[k].begin();
                    if(l<v[k].size())l=id[k][l];
                    else l=id[k].back()+1;
                    ans[query.se]-=bit.get(l,id[k].back()+1);
                    ll r=lower_bound(all(v[k]),b,cmpy)-v[k].begin();
                    if(r<v[k].size())r=id[k][r];
                    else r=id[k].back()+1;
                    ans[query.se]+=bit.get(id[k][0],r);
                }
            }
            if(p.ccw(a,b))bit.add(id[i][j],1);
            // outv(ans);
        }
    }
    for(ll x:ans)out(x);
}

Compilation message (stderr)

dragon2.cpp: In function 'int main()':
dragon2.cpp:160:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  160 |                     if(l<v[k].size())l=id[k][l];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:166:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  166 |                     if(r<v[k].size())r=id[k][r];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:175:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  175 |                     if(l<v[k].size())l=id[k][l];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:179:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  179 |                     if(r<v[k].size())r=id[k][r];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:185:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  185 |                     if(l<v[k].size())l=id[k][l];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:189:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  189 |                     if(r<v[k].size())r=id[k][r];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:222:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  222 |                     if(l<v[k].size())l=id[k][l];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:228:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  228 |                     if(r<v[k].size())r=id[k][r];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:237:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  237 |                     if(l<v[k].size())l=id[k][l];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:241:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  241 |                     if(r<v[k].size())r=id[k][r];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:247:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  247 |                     if(l<v[k].size())l=id[k][l];
      |                        ~^~~~~~~~~~~~
dragon2.cpp:251:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  251 |                     if(r<v[k].size())r=id[k][r];
      |                        ~^~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 45 / 45
• Subtask 3: 40 / 40