#include using namespace std; #define int long long #define INF (int)1e18 #define f first #define s second mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count()); const int N = 2e5 + 69; const int mod = 998244353; int a[N], n; int seg1[4*N]; int seg[4*N]; int pow2[2*N]; int power(int x, int y){ if (y==0) return 1; int v = power(x, y/2); v *= v; v %= mod; if (y&1) return v * x % mod; else return v; } void Update(int l, int r, int pos, int qp, int val){ seg[pos] += val; seg[pos] %= mod; if (l==r) return; int mid = (l+r)/2; if (qp <= mid) Update(l, mid, pos*2, qp, val); else Update(mid + 1, r, pos*2 + 1, qp, val); } void Update1(int l, int r, int pos, int qp, int val){ seg1[pos] += val; if (l==r) return; int mid = (l+r)/2; if (qp <= mid) Update1(l, mid, pos*2, qp, val); else Update1(mid + 1, r, pos*2 + 1, qp, val); } int Query(int l, int r, int pos, int ql, int qr){ if (l>=ql && r<=qr) return seg[pos]; else if (l>qr || r=ql && r<=qr) return seg1[pos]; else if (l>qr || r>n; pow2[0] = 1; for (int i=1; i<=2*n; i++) pow2[i] = pow2[i-1] * 2 % mod; int ans = 0; for (int i=1; i<=n; i++){ cin>>a[i]; // for (int j=1; j<=n; j++){ // cout<> t; for(int i = 1; i <= t; i++) { //cout << "Case #" << i << ": "; Solve(); } auto end = std::chrono::high_resolution_clock::now(); auto elapsed = std::chrono::duration_cast(end - begin); cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; return 0; }