Submission #605327

#TimeUsernameProblemLanguageResultExecution timeMemory
605327inksamuraiNekameleoni (COCI15_nekameleoni)C++17
140 / 140
2626 ms107664 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=200011; const int _n=340002; const int _k=51; struct node{ int res; int l[_k],r[_k]; }; int id[_n]; node seg[_n]; int k; // initial k void build(int node,int l,int r){ seg[node].res=inf; rep(i,k){ seg[node].l[i]=-1; seg[node].r[i]=-1; } if(l==r-1){ id[l]=node; return; } int m=(l+r)>>1; build(node*2,l,m); build(node*2+1,m,r); } void update_node(int &node,int &val,int t=0){ if(val==-1){ return; } if(node==-1){ node=val; }else if(t==0){ node=min(node,val); }else{ node=max(node,val); } } vec(pii) evs; void merge(int node){ seg[node].res=inf; seg[node].res=min(seg[node*2].res,seg[node*2+1].res); evs={}; bool flag=0; rep(i,k){ int l=seg[node*2].r[i]; int r=seg[node*2+1].l[i]; l=(l!=-1?l:-inf); r=(r!=-1?r:inf); if(l==-inf and r==inf){ flag=1; } evs.pb(pii(r,l)); int v0l=seg[node*2].l[i]; int v0r=seg[node*2].r[i]; int v1l=seg[node*2+1].l[i]; int v1r=seg[node*2+1].r[i]; seg[node].l[i]=seg[node].r[i]=-1; update_node(seg[node].l[i],v0l); update_node(seg[node].l[i],v1l); update_node(seg[node].r[i],v0r,1); update_node(seg[node].r[i],v1r,1); } if(flag){ return; } sort(evs.begin(), evs.end()); int mi=inf; per(i,sz(evs)){ if(mi==-inf){ break; } if(evs[i].fi!=inf and mi!=inf){ seg[node].res=min(seg[node].res,evs[i].fi-mi+1); } mi=min(mi,evs[i].se); } } void update(int pos,int v){ int node=id[pos]; rep(i,k){ seg[node].l[i]=seg[node].r[i]=-1; } seg[node].res=inf; seg[node].l[v]=seg[node].r[v]=pos; node>>=1; while(node){ merge(node); node>>=1; } } signed main(){ _3Pxrs5V; int n,q; cin>>n>>k>>q; build(1,0,n); rep(i,n){ int v; cin>>v; v-=1; update(i,v); } rep(_,q){ int t; cin>>t; if(t==1){ int i,v; cin>>i>>v; i-=1,v-=1; update(i,v); }else{ if(k==1){ cout<<"1\n"; }else{ int res=seg[1].res; cout<<(res>n?-1:res)<<"\n"; } } } }
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