Submission #1149717

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Source Code Expand

                            #include <bits/stdc++.h>
                            #include<iostream>
                            #include<cstdio>
                            #include<vector>
                            #include<queue>
                            #include<map>
                            #include<cstring>
                            #include<string>
                            #include <math.h>
                            #include<algorithm>
                        //    #include <boost/multiprecision/cpp_int.hpp>
                            #include<functional>
                     #define int long long
                            #define inf  1000000007
                            #define pa pair<int,int>
                            #define ll long long
                            #define pal pair<double,int>
                            #define ppa pair<string,pa>
                            #define ssa pair<string,int>
                            #define  mp make_pair
                            #define  pb push_back
                            #define EPS (1e-10)
                            #define equals(a,b) (fabs((a)-(b))<EPS)
                     
                            using namespace std;
                     //priority_queue<int, vector<int>, greater<int> > que;
                            class Point{
                            	public:
                            	double x,y;
                            	Point(double x=0,double y=0):x(x),y(y) {}
                            	Point operator + (Point p) {return Point(x+p.x,y+p.y);}
                            	Point operator - (Point p) {return Point(x-p.x,y-p.y);}
                            	Point operator * (double a) {return Point(x*a,y*a);}
                            	Point operator / (double a) {return Point(x/a,y/a);}
                            	double absv() {return sqrt(norm());}
                            	double norm() {return x*x+y*y;}
                            	bool operator < (const Point &p) const{
                            		return x != p.x ? x<p.x: y<p.y;
                            	}
                            	bool operator == (const Point &p) const{
                            		return fabs(x-p.x)<EPS && fabs(y-p.y)<EPS;
                            	}
                            };
                            typedef Point Vector;
                     
                            struct Segment{
                            Point p1,p2;
                            };
                     
                        double hen(Vector a){
                        if(fabs(a.x)<EPS && a.y>0) return acos(0);
                        else if(fabs(a.x)<EPS && a.y<0) return 3*acos(0);
                        else if(fabs(a.y)<EPS && a.x<0) return 2*acos(0);
                        else if(fabs(a.y)<EPS && a.x>0) return 0.0;
                        else if(a.y>0) return acos(a.x/a.absv());
                        else return 2*acos(0)+acos(-a.x/a.absv());
                     
                        }
                     
                string itos( int i ) {
                ostringstream s ;
                s << i ;
                return s.str() ;
                }
                 
                int gcd(int v,int b){
                	if(v>b) return gcd(b,v);
                	if(v==b) return b;
                	if(b%v==0) return v;
                	return gcd(v,b%v);
                }
                            double dot(Vector a,Vector b){
                            	return a.x*b.x+a.y*b.y;
                            }
                            double cross(Vector a,Vector b){
                            	return a.x*b.y-a.y*b.x;
                            }
                        
                double distans(double x1,double y1,double x2,double y2){
                	double rr=(x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);
                	return sqrt(rr);
                	
                }

                            //----------------kokomade tenpure------------
int N=262144;
pa sgt[530000];

pa minis(int i,int j ){
if(i==j) return sgt[i];
	else if(i%2==1){
		pa z=minis(i+1,j);
		if(sgt[i].first>z.first)return sgt[i] ;
		else return z;
	}
		else if(j%2==0) 	{
		pa z=minis(i,j-1);
		if(sgt[j].first>z.first)return sgt[j] ;
		else return z;
	}
else return minis(i/2,j/2);
}

pa sgtmin(int i ,int j) {
	return minis(i+N,j+N);
}

void upd(int x,int y){
	x+=N;
sgt[x].first=y;
	sgt[x].second=x;
x=x/2;
while(x != 0){
	if(sgt[2*x+1].first>sgt[2*x].first){
		sgt[x]=sgt[2*x+1];
	}
	else sgt[x]=sgt[2*x];

x=x/2;
}
}
int s[100010],t[100010];
int imo[100010]={0};
 signed  main(){
 	int n;
cin>>n;
 //	cout<<"s"<<endl;
 	for(int i=0;i<n;i++){
 		cin>>s[i]>>t[i];
 		imo[s[i]]++;
 		imo[t[i]]--;
 	}
 	for(int i=1;i<=100003;i++) imo[i] += imo[i-1];
 //	cout<<"s"<<endl;
 	for(int i=0;i<N;i++){
 		if(i<100003) sgt[i+N]=mp(imo[i],i);
 		else sgt[i+N]=mp(0,i);
 	}
 //	cout<<"s"<<endl;
 	for(int i=N-1;i>0;i--){
		if(sgt[2*i].first<sgt[2*i+1].first) sgt[i]=sgt[2*i+1];
		else sgt[i]=sgt[2*i];
	}
 	int ans=inf;
 	
 	for(int i=0;i<n;i++){
 		int d1,d2,d3;
 		d1=sgtmin(0,s[i]-1).first;
 		d2=sgtmin(s[i],t[i]-1).first-1;
 		d3=sgtmin(t[i],N-1).first;
 		int r=max(d1,max(d2,d3));
 		ans=min(r,ans);
 	}
 	cout<<ans<<endl;
 	//	for(int i=0;i<=n;i++) cout<<a[con+i]<<" ";
 	//	cout<<endl;
 	
	
 	//  	printf("%.10f\n",ans[n-1]);
                    	return 0;
}

Submission Info

Judge Result