#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N; int P[202020],R[202020]; const ll mo=998244353; template class BIT_mod { public: V bit[1<=mo)?mo:0; e+=e&-e;}} }; BIT_mod bt,num; ll modpow(ll a, ll n = mo-2) { ll r=1;a%=mo; while(n) r=r*((n%2)?a:1)%mo,a=a*a%mo,n>>=1; return r; } void solve() { int i,j,k,l,r,x,y; string s; cin>>N; FOR(i,N) { cin>>P[i]; R[N-P[i]]=i; } ll ret=0; FOR(i,N) { x=R[i]; ret+=num(x)*modpow(2,N-1)%mo; ret-=bt(x)*modpow(2,N-1-x)%mo; bt.add(x,modpow(2,x)); num.add(x,1); } cout<<(ret%mo+mo)%mo<