Submission #200723

#TimeUsernameProblemLanguageResultExecution timeMemory
200723NordwayGap (APIO16_gap)C++14
42.89 / 100
92 ms1912 KiB
#include<bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include "gap.h" #define x first #define y second #define pb push_back #define mp make_pair #define all(v) v.begin(),v.end() #define sz(v) (int)v.size() #define up_b upper_bound #define low_b lower_bound using namespace std; using namespace __gnu_pbds; typedef long long ll; typedef long double ld; typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>ordered_set; template<class T,int SZ> struct BIT{ T t[SZ]; void upd(int x,T y){ for(int i=x;i<SZ;i=(i|(i+1))){ t[i]+=y; } } T pref(int x){ T res=0; for(int i=x;i>=0;i=(i&(i+1))-1){ res+=t[i]; } return res; } T get(int l,int r){ return pref(r)-pref(l-1); } }; template<class T,int SZ> struct ST{ T t[4*SZ]; void build(T a[],int v,int tl,int tr){ if(tl==tr){ t[v]=a[tl]; return ; } int tm=(tl+tr)/2; build(a,v*2,tl,tm); build(a,v*2+1,tm+1,tr); t[v]=t[v*2]+t[v*2+1]; } void upd(int v,int tl,int tr,int pos,T val){ if(tl==tr){ t[v]+=val; return ; } int tm=(tl+tr)/2; if(pos<=tm)upd(v*2,tl,tm,pos,val); else upd(v*2+1,tm+1,tr,pos,val); t[v]=t[v*2]+t[v*2+1]; } T get(int v,int tl,int tr,int l,int r){ if(tl>r||l>tr)return 0; if(l<=tl&&tr<=r)return t[v]; int tm=(tl+tr)/2; return get(v*2,tl,tm,l,r)+get(v*2+1,tm+1,tr,l,r); } }; const int N=1e5+11; const int M=1e3+11; const int W=1e3+11; const int inf=INT_MAX; const ll INF=1e18; const ll mod=1e9+7; const ld EPS=1e-9; const int dx[4]={0,0,1,-1}; const int dy[4]={1,-1,0,0}; ll a[N]; pair<ll,pair<ll,ll>>solve(ll l,ll r){ if(l>r)return mp(0,mp(-1,-1)); ll mn=l,mx=r; MinMax(l,r,&mn,&mx); if(mn==-1&&mx==-1)return mp(0,mp(-1,-1)); ll mid=(mx+mn)/2; pair<ll,pair<ll,ll>>L=solve(mn+1,mid); pair<ll,pair<ll,ll>>R=solve(mid+1,mx-1); ll res=max(L.x,R.x); if(L.y.x!=-1)res=max(res,L.y.x-mn); else if(R.y.x!=-1)res=max(res,R.y.x-mn); if(R.y.y!=-1)res=max(res,mx-R.y.y); else if(L.y.y!=-1)res=max(res,mx-L.y.y); if(L.y.y!=-1&&R.y.x!=-1)res=max(res,R.y.x-L.y.y); return mp(res,mp(mn,mx)); } ll findGap(int T,int n){ ll l=0,r=INF; if(T==2){ ll mn,mx; MinMax(l,r,&mn,&mx); ll ans; if(n==2)ans=mx-mn; else{ pair<ll,pair<ll,ll>>p=solve(mn+1,mx-1); ans=p.x; ans=max(ans,max(p.y.x-mn,mx-p.y.y)); } return ans; } else{ ll ans=0; for(int i=1;i<=(n+1)/2;i++){ ll nl=l,nr=r; MinMax(l,r,&nl,&nr); int j=n-i+1; a[i]=nl; a[j]=nr; l=nl+1,r=nr-1; } for(int i=1;i<n;i++){ ans=max(ans,a[i+1]-a[i]); } return ans; } }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...