#include using namespace std; #if __has_include() #include using namespace atcoder; templateistream &operator>>(istream &is,static_modint &a){long long b;is>>b;a=b;return is;} istream &operator>>(istream &is,modint &a){long long b;cin>>b;a=b;return is;} #endif #ifdef LOCAL #include "debug.h" #else #define debug(...) static_cast(0) #define debugg(...) static_cast(0) templateostream &operator<<(ostream &os,const pair&p){os<; templateusing minque=priority_queue,greater>; templatebool chmax(T &a,const T &b){return (abool chmin(T &a,const T &b){return (a>b?(a=b,true):false);} templateistream &operator>>(istream &is,pair&p){is>>p.first>>p.second;return is;} templateistream &operator>>(istream &is,vector &a){for(auto &i:a)is>>i;return is;} templatevoid operator++(pair&a,int n){a.first++,a.second++;} templatevoid operator--(pair&a,int n){a.first--,a.second--;} templatevoid operator++(vector&a,int n){for(auto &i:a)i++;} templatevoid operator--(vector&a,int n){for(auto &i:a)i--;} #define reps(i,a,n) for(int i=(a);i<(n);i++) #define rep(i,n) reps(i,0,n) #define all(x) x.begin(),x.end() #define pcnt(x) __builtin_popcountll(x) ll myceil(ll a,ll b){return (a+b-1)/b;} template auto vec(const int (&d)[n],const T &init=T()){ if constexpr (id(d,init)); else return init; } void SOLVE(); int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); #ifdef LOCAL clock_t start=clock(); #endif int testcase=1; //cin>>testcase; for(int i=0;i struct convex_hull_trick{ private: struct node{ node *left,*right; static const T inf=numeric_limits::max(); T a,b; node():node(0,inf){} node(const T a,const T b):left(nullptr),right(nullptr),a(a),b(b){} T f(const T x)const{return a*x+b;} }; static void swap(node *x,node *y){ std::swap(x->a,y->a),std::swap(x->b,y->b); } void add(node *cu,node *nw,T l,T r){ while(true){ if(nw->f(l)f(l))swap(cu,nw); if(cu->f(r-1)<=nw->f(r-1))return; T mid=(l+r)/2; if(cu->f(mid)<=nw->f(mid)){ if(!cu->right){ cu->right=new node(*nw); return; } else{ cu=cu->right,l=mid; } } else{ swap(cu,nw); if(!cu->left){ cu->left=new node(*nw); return; } else{ cu=cu->left,r=mid; } } } } T query(node *cu,T k,T l,T r)const{ T ans=numeric_limits::max(); while(cu){ chmin(ans,cu->f(k)); T mid=(l+r)/2; if(kleft,r=mid; } else{ cu=cu->right,l=mid; } } return ans; } void clear(node *cu){ if(cu->left)clear(cu->left); if(cu->right)clear(cu->right); delete cu; } const T l,r; node *root; public: convex_hull_trick(const T l,const T r):l(l),r(r),root(new node()){ assert(ldat; int b2; S(ll x){ b2=1; while(b2>=1,r>>=1; } } ll b(int i){ ll ret=1e18; i+=b2; while(i){ chmin(ret,dat[i]); i>>=1; } return ret; } }; void SOLVE(){ int n; cin>>n; vectora(n); cin>>a; vectorra(a); ra.push_back(0); for(int i=n-1;i>=0;i--)ra[i]+=ra[i+1]; S seg(n); auto dfs=[&](auto self,int l,int r)->void { if(l+1==r){ seg.a(l,l+1,1+a[l]); return; } if(l+2==r){ seg.a(l,l+2,4+a[l]+a[l+1]); seg.a(l,l+1,1+a[l]); seg.a(l+1,l+2,1+a[l+1]); return; } int mid=(l+r)/2; self(self,l,mid); self(self,mid+1,r); { convex_hull_trickcht(-1e9,1e9); reps(k,mid+1,r+1)cht.add(-2*k,ll(k)*k-ra[k]); reps(i,l,mid+1){ ll now=cht.query(i)+ll(i)*i+ra[i]; debug(i,mid+1,now); seg.a(i,mid+1,now); } } { convex_hull_trickcht(-1e9,1e9); reps(k,l,mid+1)cht.add(-2*k,ll(k)*k+ra[k]); reps(i,mid+1,r+1){ ll now=cht.query(i)+ll(i)*i-ra[i]; debug(mid,i,now); seg.a(mid,i,now); } } }; dfs(dfs,0,n); //l<=i