Submission #605384

#TimeUsernameProblemLanguageResultExecution timeMemory
605384inksamuraiNekameleoni (COCI15_nekameleoni)C++17
140 / 140
786 ms50592 KiB
#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"; } } }
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