oj.uz

Submission #605384

# Submission time Handle Problem Language Result Execution time Memory
605384 2022-07-25T16:49:08 Z inksamurai Nekameleoni (COCI15_nekameleoni) C++17
140 / 140
 786 ms 50592 KB 
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3Pxrs5V ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
//e


const int inf=200000;

const int _n=280011; // fix me

int a[_n];

struct node{
	int res=inf;
	vector<pair<ll,int>> l;
	vector<pair<ll,int>> r;
};

struct tournament{
	int n,k;
	int id[_n]; // node id for position
	node seg[_n];
	tournament(int _n=0,int _k=0){
		n=_n;
		k=_k;
		build(1,0,n);
	}
	void merge(int node){
		seg[node].l=seg[node*2].l;
		seg[node].r=seg[node*2+1].r;
		seg[node].res=inf;
		seg[node].res=min(seg[node*2].res,seg[node*2+1].res);
		rep(i,sz(seg[node*2+1].l)){
			pair<ll,int> v=seg[node*2+1].l[i];
			if(sz(seg[node].l)){
				pair<ll,int> p=seg[node].l.back();
				if(!((p.fi&v.fi)==v.fi)){
					seg[node].l.pb({p.fi|v.fi,v.se});
				}
			}else{
				seg[node].l.pb(v);
			}
		}
		rep(i,sz(seg[node*2].r)){
			pair<ll,int> v=seg[node*2].r[i];
			if(sz(seg[node].r)){
				pair<ll,int> p=seg[node].r.back();
				if(!((p.fi&v.fi)==v.fi)){
					seg[node].r.pb({p.fi|v.fi,v.se});
				}
			}else{
				seg[node].r.pb(v);
			}
		}
		if(sz(seg[node].l)==k){
			seg[node].res=min(seg[node].res,seg[node].l.back().se-seg[node].l[0].se+1);
		}
		if(sz(seg[node].r)==k){
			seg[node].res=min(seg[node].res,seg[node].r[0].se-seg[node].r.back().se+1);	
		}
		int posl=0;
		const ll need=(1ll<<k)-1;
		per(i,sz(seg[node*2+1].l)){
			ll now=seg[node*2+1].l[i].fi;
			int posr=seg[node*2+1].l[i].se;
			while(posl<sz(seg[node*2].r) and (now|seg[node*2].r[posl].fi)!=need){
				posl+=1;
			}
			if(posl<sz(seg[node*2].r) and (now|seg[node*2].r[posl].fi)==need){
				seg[node].res=min(seg[node].res,posr-seg[node*2].r[posl].se+1);
			}
		}
	}
	void build(int node,int l,int r){
		if(l==r-1){
			id[l]=node;
			seg[node].l.pb({});
			seg[node].r.pb({});
			seg[node].l[0]=seg[node].r[0]={1ll<<a[l],l};
			seg[node].res=inf;
			return;
		}
		int m=(l+r)>>1;
		build(node*2,l,m);
		build(node*2+1,m,r);
		merge(node);
	}
	void update(int pos,int v){
		int node=id[pos];
		seg[node].l[0]=seg[node].r[0]={1ll<<v,pos};
		seg[node].res=inf;
		node>>=1;
		while(node){
			merge(node);
			node>>=1;
		}
	}
};

signed main(){
_3Pxrs5V;
	int n,k,q;
	cin>>n>>k>>q;
	rep(i,n){
		cin>>a[i];
		a[i]-=1;
	}
	tournament seg(n,k);
	rep(_,q){
		int t;
		cin>>t;
		if(t==1){
			int i,v;
			cin>>i>>v;
			i-=1,v-=1;
			seg.update(i,v);
		}else{
			cout<<(seg.seg[1].res>n?-1:seg.seg[1].res)<<"\n";
		}
	}
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 17596 KB Output is correct
2 Correct 15 ms 17492 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 18060 KB Output is correct
2 Correct 22 ms 18016 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 18496 KB Output is correct
2 Correct 29 ms 18448 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 250 ms 23936 KB Output is correct
2 Correct 563 ms 40364 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 386 ms 35404 KB Output is correct
2 Correct 586 ms 48256 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 460 ms 31308 KB Output is correct
2 Correct 604 ms 44412 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 594 ms 38324 KB Output is correct
2 Correct 599 ms 45748 KB Output is correct

Subtask #8
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 635 ms 37340 KB Output is correct
2 Correct 676 ms 47576 KB Output is correct

Subtask #9
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 786 ms 50592 KB Output is correct
2 Correct 644 ms 49940 KB Output is correct

Subtask #10
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 727 ms 50584 KB Output is correct
2 Correct 692 ms 49860 KB Output is correct