#include using namespace std; #define ALL(x) x.begin(),x.end() #define rep(i,n) for(int i=0;i<(n);i++) #define debug(v) cout<<#v<<":";for(auto x:v){cout<bool chmax(T &a,const T &b){if(abool chmin(T &a,const T &b){if(b ostream &operator<<(ostream &os,const pair&p){ os< ostream &operator<<(ostream &os,const vector&v){ for(int i=0;i<(int)v.size();i++) os< struct SegmentTree{ using F=function; int sz; vector seg; const F f; const Monoid gen; SegmentTree(int n,const F f,const Monoid &gen):f(f),gen(gen){ sz=1; while(sz0;k--) seg[k]=f(seg[2*k],seg[2*k+1]); } void update(int k,const Monoid &x){ k+=sz; seg[k]=x; while(k>>=1) seg[k]=f(seg[2*k],seg[2*k+1]); } // [a,b) Monoid query(int a,int b){ Monoid L=gen,R=gen; for(a+=sz,b+=sz;a>=1,b>>=1){ if(a&1) L=f(L,seg[a++]); if(b&1) R=f(seg[--b],R); } return f(L,R); } Monoid operator[](const int &k)const { return seg[k+sz]; } }; using P=pair; P f(P a,P b){ return ab?a:b; } signed main(){ int n;cin>>n; vector a(n); rep(i,n) cin>>a[i]; if(a[0]>a[n-1]){ cout<<"No"< segmin(n,f,make_pair(INF,INF)),segmax(n,g,make_pair(-1,-1)); rep(i,n) segmax.set(i,make_pair(a[i],i)),segmin.set(i,make_pair(a[i],i)); segmax.build(); segmin.build(); set st; rep(i,n)st.insert(i); vector ans; while(st.size()>1){ { auto mip=segmin.query(0,n); // cout<