#include using namespace std; typedef long long ll; int N, Q; const int INF = INT_MAX; struct LazySegmentTree { private: int n; vector node, lazy; vector lazyFlag; public: LazySegmentTree(vector v) { int sz = (int)v.size(); n = 1; while(n < sz) n *= 2; node.resize(2*n-1); lazy.resize(2*n-1, INF); lazyFlag.resize(2*n-1, false); for(int i=0; i=0; i--) node[i] = node[i*2+1] + node[i*2+2]; } void lazyEvaluate(int k, int l, int r) { if(lazyFlag[k]) { node[k] = lazy[k]; if(r - l > 1) { lazy[k*2+1] = lazy[k*2+2] = lazy[k]; lazyFlag[k*2+1] = lazyFlag[k*2+2] = true; } lazyFlag[k] = false; } } void update(int a, int b, int x, int k=0, int l=0, int r=-1) { if(r < 0) r = n; lazyEvaluate(k, l, r); if(b <= l || r <= a) return; if(a <= l && r <= b) { lazy[k] = x; lazyFlag[k] = true; lazyEvaluate(k, l, r); } else { update(a, b, x, 2*k+1, l, (l+r)/2); update(a, b, x, 2*k+2, (l+r)/2, r); node[k] = node[2*k+1] + node[2*k+2]; } } int find(int a, int b, int k=0, int l=0, int r=-1) { if(r < 0) r = n; lazyEvaluate(k, l, r); if(b <= l || r <= a) return 0; if(a <= l && r <= b) return node[k]; int vl = find(a, b, 2*k+1, l, (l+r)/2); int vr = find(a, b, 2*k+2, (l+r)/2, r); return vl+ vr; } }; int main() { cin.tie(0); ios::sync_with_stdio(false); map first, last; cin >> N; vector a(N); for(int i=0;i> a[i]; for(int i=N-1;i>=0;i--) first[a[i]] = i; for(int i=0;i(N, 0)); for(int i=0;i