#include using namespace std; #define ALL(x) begin(x),end(x) #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 vector&v){ for(int i=0;i<(int)v.size();i++) os< istream &operator>>(istream &is,vector&v){ for(T &x:v)is>>x; return is; } template struct ModInt{ long long x; ModInt():x(0){} ModInt(long long y):x(y>=0?y%Mod:(Mod-(-y)%Mod)%Mod){} ModInt &operator+=(const ModInt &p){ if((x+=p.x)>=Mod) x-=Mod; return *this; } ModInt &operator-=(const ModInt &p){ if((x+=Mod-p.x)>=Mod)x-=Mod; return *this; } ModInt &operator*=(const ModInt &p){ x=(int)(1ll*x*p.x%Mod); return *this; } ModInt &operator/=(const ModInt &p){ (*this)*=p.inverse(); return *this; } ModInt operator-()const{return ModInt(-x);} ModInt operator+(const ModInt &p)const{return ModInt(*this)+=p;} ModInt operator-(const ModInt &p)const{return ModInt(*this)-=p;} ModInt operator*(const ModInt &p)const{return ModInt(*this)*=p;} ModInt operator/(const ModInt &p)const{return ModInt(*this)/=p;} bool operator==(const ModInt &p)const{return x==p.x;} bool operator!=(const ModInt &p)const{return x!=p.x;} ModInt inverse()const{ int a=x,b=Mod,u=1,v=0,t; while(b>0){ t=a/b; swap(a-=t*b,b);swap(u-=t*v,v); } return ModInt(u); } ModInt pow(long long n)const{ ModInt ret(1),mul(x); while(n>0){ if(n&1) ret*=mul; mul*=mul;n>>=1; } return ret; } friend ostream &operator<<(ostream &os,const ModInt &p){return os<>(istream &is,ModInt &a){long long t;is>>t;a=ModInt(t);return (is);} static int get_mod(){return Mod;} }; using mint=ModInt; template 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]; } }; mint f(mint a,mint b){ return a+b; } signed main(){ int n;cin>>n; vector a(n); cin>>a; reverse(ALL(a)); vector comp=a; sort(ALL(comp)); comp.erase(unique(ALL(comp)),end(comp)); auto mugen=[&](vector v,vector &res,vector &cnt,bool upper=false){ SegmentTree val((int)comp.size(),f,mint(0)),scn((int)comp.size(),f,mint(0)); val.build();scn.build(); rep(i,n){ int idx=lower_bound(ALL(comp),v[i])-begin(comp); res[i]=(upper?val.query(idx+1,(int)comp.size()):val.query(0,idx)); cnt[i]=(upper?scn.query(idx+1,(int)comp.size()):scn.query(0,idx)); val.update(idx,val[i]+v[i]); scn.update(idx,scn[i]+1); } return ; }; vector lv(n),lc(n),rv(n),rc(n); mugen(a,lv,lc); reverse(ALL(a)); mugen(a,rv,rc,true); reverse(ALL(rv));reverse(ALL(rc)); reverse(ALL(a)); // debug(a); // debug(lc); // debug(rc); // debug(lv); // debug(rv); mint res=0; rep(i,n){ res+=lc[i]*rv[i]; res+=lv[i]*rc[i]; res+=lc[i]*rc[i]*mint(a[i]); } cout<