Submission #140015

#	Time	Username	Problem	Language	Result	Execution time	Memory
140015		MvC	Jousting tournament (IOI12_tournament)	C++11	0 / 100	84 ms	12796 KiB

tournament

#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#include<bits/stdc++.h>
//#include "tournament.h"
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=1e5+50;
const int mod=1e9+7;
using namespace std;
int n,i,s[nmax],e[nmax],st[4*nmax],rs[nmax],mn[nmax],j,t,x,y,r,c,a[nmax],mx,id,l,fw[nmax],p[nmax];
int smn[4*nmax],smx[4*nmax],lzy[4*nmax],eq[4*nmax];
vector<pair<int,int> >lb[nmax],rb[nmax];
vector<int>vc[nmax];
void upd(int x,int l,int r,int p,int v)
{
	if(l==r)
	{
		st[x]=min(st[x],v);
		return;
	}
	int mid=(l+r)/2;
	if(mid>=p)upd(2*x,l,mid,p,v);
	else upd(2*x+1,mid+1,r,p,v);
	st[x]=min(st[2*x],st[2*x+1]);
}
int qry(int x,int l,int r,int tl,int tr)
{
	if(l>tr || r<tl)return inf;
	if(tl<=l && r<=tr)return st[x];
	int mid=(l+r)/2;
	return min(qry(2*x,l,mid,tl,tr),qry(2*x+1,mid+1,r,tl,tr));
}
void upd(int i,int v)
{
	for(;i<=n;i+=i&(-i))fw[i]+=v;
}
int qry(int i)
{
	int ans=0;
	for(;i>=1;i-=i&(-i))ans+=fw[i];
	return ans;
}
void build(int x,int l,int r)
{
	eq[x]=inf;
    if(l==r)
    {
        smn[x]=smx[x]=l;
        return;
    }
    int mid=(l+r)/2;
    build(2*x,l,mid);
    build(2*x+1,mid+1,r);
    smn[x]=min(smn[2*x],smn[2*x+1]);
    smx[x]=max(smx[2*x],smx[2*x+1]);
}
void push(int nod,int l,int r)
{
	if(eq[nod]!=inf)
	{
		smx[nod]=smn[nod]=eq[nod];
		if(l!=r)
		{
			eq[2*nod]=eq[nod];
			eq[2*nod+1]=eq[nod];
		}
		eq[nod]=inf;
		lzy[nod]=0;
	}
    if(!lzy[nod])return;
    smx[nod]-=lzy[nod];
    smn[nod]-=lzy[nod];
    if(l!=r)
    {
    	lzy[nod*2]+=lzy[nod];
		lzy[nod*2+1]+=lzy[nod];
	}
    lzy[nod]=0;
}
void up(int nod,int l,int r,int tl,int tr,int v,int t)
{
    push(nod,l,r);
    if(tl<=l && r<=tr)
	{
		if(!t)eq[nod]=v;
		else lzy[nod]+=v;
        push(nod,l,r);
        return;
    }
    int mid=(l+r)/2;
    if(tl<=mid)up(nod*2,l,mid,tl,tr,v,t);
    if(mid<tr)up(nod*2+1,mid+1,r,tl,tr,v,t);
    push(nod*2,l,mid);
	push(nod*2+1,mid+1,r);
    smx[nod]=max(smx[2*nod],smx[2*nod+1]);
    smn[nod]=min(smn[2*nod],smn[2*nod+1]);
}
int kth(int nod,int l,int r,int k)
{
	if(!k)return 0;
    push(nod,l,r);
    if(l==r)return l;
    int mid=(l+r)/2;
    if(smx[2*nod]>k || (smx[2*nod]==k && smn[2*nod+1]>k))return kth(2*nod,l,mid,k);
    else return kth(2*nod+1,mid+1,r,k);
}
int qr(int x,int l,int r,int tl,int tr)
{
	if(tl>r || tr<l)return inf;
    push(x,l,r);
    if(tl<=l && r<=tr)return smn[x];
    int mid=(l+r)/2;
    return min(qr(2*x,l,mid,tl,tr),qr(2*x+1,mid+1,r,tl,tr));
}
/*int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n>>c>>r;
	r++;
	for(i=1;i<n;i++)
	{
		cin>>a[i];
		a[i]++;
	}
	for(i=1;i<=c;i++)
	{
		cin>>s[i]>>e[i];
		s[i]++,e[i]++;
	}
	build(1,1,n);
	for(i=1;i<=c+1;i++)
	{
		for(j=1;j<=n;j++)cout<<qr(1,1,n,j,j)<<" ";
		cout<<endl;
		if(i==c+1)break;
		x=kth(1,1,n,s[i]-1)+1,y=kth(1,1,n,e[i]);
		up(1,1,n,x,y,s[i],0);
		if(y<n)up(1,1,n,y+1,n,e[i]-s[i],1);
		lb[x].pb(mkp(y,i));
		rb[y].pb(mkp(x,i));
		s[i]=x,e[i]=y;
	}
	for(i=1;i<=4*n;i++)st[i]=c;
	j=1,l=0;
	for(i=1;i<=n;i++)
	{
		for(;j<=l;j++)
		{
			for(t=0;t<lb[j].size();t++)
			{
				upd(1,1,n,lb[j][t].fr,lb[j][t].sc);
			}
		}
		mn[i]=qry(1,1,n,i,n);
		if(a[i]>r)l=i;
	}
	for(i=1;i<=4*n;i++)st[i]=c;
	j=n,l=n+1;
	for(i=n;i>=1;i--)
	{
		if(a[i]>r)l=i;
		for(;j>l;j--)
		{
			for(t=0;t<rb[j].size();t++)
			{
				upd(1,1,n,rb[j][t].fr,rb[j][t].sc);
			}
		}
		mn[i]=min(mn[i],qry(1,1,n,1,i));
		vc[mn[i]].pb(i);
	}
	cout<<l<<endl;
	for(i=1;i<=c;i++)
	{
		for(j=0;j<vc[i].size();j++)
		{
			rs[vc[i][j]]=qry(vc[i][j]);
		}
		upd(s[i],1);
		upd(e[i]+1,-1);
	}
	mx=-1;
	for(i=1;i<=n;i++)
	{
		if(mx<rs[i])
		{
			mx=rs[i];
			id=i;
		}
	}
	cout<<mx<<" "<<id<<endl;
    return 0;
}
/*
5 3 3
1 0 2 4
1 3
0 1
0 1
*/
int GetBestPosition(int N,int C,int R,int K[],int S[],int E[])
{
	n=N,c=C,r=R+1;
	for(i=1;i<n;i++)a[i]=K[i-1]+1;
	for(i=1;i<=c;i++)
	{
		s[i]=S[i-1]+1;
		e[i]=E[i-1]+1;
	}
	build(1,1,n);
	for(i=1;i<=c;i++)
	{
		x=kth(1,1,n,s[i]-1)+1,y=kth(1,1,n,e[i]);
		x=max(x,0);
		y=min(y,n);
		x=min(x,n);
		y=max(y,0);
		up(1,1,n,x,y,s[i],0);
		if(y<n)up(1,1,n,y+1,n,e[i]-s[i],1);
		lb[x].pb(mkp(y,i));
		rb[y].pb(mkp(x,i));
		s[i]=x,e[i]=y;
	}
	for(i=1;i<=4*n;i++)st[i]=c;
	j=1,l=0;
	for(i=1;i<=n;i++)
	{
		for(;j<=l;j++)
		{
			for(t=0;t<lb[j].size();t++)
			{
				upd(1,1,n,lb[j][t].fr,lb[j][t].sc);
			}
		}
		mn[i]=qry(1,1,n,i,n);
		if(a[i]>r)l=i;
	}
	for(i=1;i<=4*n;i++)st[i]=c;
	j=n,l=n+1;
	for(i=n;i>=1;i--)
	{
		if(a[i]>r)l=i;
		for(;j>l;j--)
		{
			for(t=0;t<rb[j].size();t++)
			{
				upd(1,1,n,rb[j][t].fr,rb[j][t].sc);
			}
		}
		mn[i]=min(mn[i],qry(1,1,n,1,i));
		vc[mn[i]].pb(i);
	}
	for(i=1;i<=c;i++)
	{
		for(j=0;j<vc[i].size();j++)
		{
			rs[vc[i][j]]=qry(vc[i][j]);
		}
		upd(s[i],1);
		upd(e[i]+1,-1);
	}
	mx=-1;
	for(i=1;i<=n;i++)
	{
		if(mx<rs[i])
		{
			mx=rs[i];
			id=i;
		}
	}
	return id-1;
}

Compilation message (stderr)

tournament.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("O3")
 
tournament.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops")
 
tournament.cpp:209:1: warning: "/*" within comment [-Wcomment]
 /*
  
tournament.cpp: In function 'int GetBestPosition(int, int, int, int*, int*, int*)':
tournament.cpp:245:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(t=0;t<lb[j].size();t++)
            ~^~~~~~~~~~~~~
tournament.cpp:260:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(t=0;t<rb[j].size();t++)
            ~^~~~~~~~~~~~~
tournament.cpp:270:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(j=0;j<vc[i].size();j++)
           ~^~~~~~~~~~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 32
• Subtask 3: 0 / 51