#include"bits/stdc++.h" using namespace std; #define REP(k,m,n) for(int (k)=(m);(k)<(n);(k)++) #define rep(i,n) REP((i),0,(n)) int main() { int N; cin>>N; vector a(N); rep(i,N)cin>>a[i]; if(a.front()>a.back()){ cout<<"No"< st; st.push_back(a.front()); REP(i,1,N-1){ if(st.back()