#include using namespace std; #include #include //#define int long long #define REP(i,m,n) for(int i=(m);i<(n);i++) #define rep(i,n) REP(i,0,n) #define pb push_back #define all(a) a.begin(),a.end() #define rall(c) (c).rbegin(),(c).rend() #define mp make_pair #define endl '\n' //#define vec vector //#define mat vector > #define fi first #define se second #define double long double typedef long long ll; typedef unsigned long long ull; typedef pair pll; //typedef long double ld; typedef complex Complex; const ll INF=1e9+7; const ll MOD=998244353; const ll inf=INF*INF; const ll mod=MOD; const ll inv2=499122177; const ll MAX=200010; const double PI=acos(-1.0); typedef vector > mat; typedef vector vec; ll dx[]={0,1,0,-1,-1,-1,1,1}; ll dy[]={1,0,-1,0,-1,1,-1,1}; //Binary Indexes Tree template< typename T > struct BinaryIndexedTree { vector< T > data; BinaryIndexedTree(int sz) { data.assign(++sz, 0); } T sum(int k) { T ret = 0; for(++k; k > 0; k -= k & -k) ret += data[k]; return (ret); } void add(int k, T x) { for(++k; k < data.size(); k += k & -k) data[k] += x; } }; void solve(){ ll n;cin>>n; vectora(n); rep(i,n)cin>>a[i]; ll ans1=0; { ll cnt1=0,cnt2=1; vectorb(n); rep(i,n){ if(a[i]>n/2){ b[i]=cnt1; cnt1+=2; }else{ b[i]=cnt2; cnt2+=2; } } BinaryIndexedTreebit(n); ll ans=0; rep(i,n){ ll s=bit.sum(n-1); if(b[i])s-=bit.sum(b[i]); ans+=s; bit.add(b[i],1); } ans1=ans; } ll ans2=inf; if(n%2==0){ ll cnt1=1,cnt2=0; vectorb(n); rep(i,n){ if(a[i]>n/2){ b[i]=cnt1; cnt1+=2; }else{ b[i]=cnt2; cnt2+=2; } } BinaryIndexedTreebit(n); ll ans=0; rep(i,n){ ll s=bit.sum(n-1); if(b[i])s-=bit.sum(b[i]); ans+=s; bit.add(b[i],1); } ans2=ans; } cout<