#line 1 "c.cpp" #include #include #define rep(i,n) for (int i = 0; i < int(n); ++i) #define repp(i,n,m) for (int i = m; i < int(n); ++i) #define reb(i,n) for (int i = int(n)-1; i >= 0; --i) #define all(v) v.begin(),v.end() using namespace std; using namespace atcoder; using ll = long long; using ull = unsigned long long; using ld = long double; using P = pair; using PL = pair; using pdd = pair; using pil = pair; using pli = pair; templateistream &operator>>(istream &is,vector &v){for(auto &e:v)is>>e;return is;} templatebool range(T a,T b,T x){return (a<=x&&xbool rrange(T a,T b,T c,T d,T x,T y){return (range(a,c,x)&&range(b,d,y));} template T rev(const T& str_or_vec){T res = str_or_vec; reverse(res.begin(),res.end()); return res; } templatebool chmin(T &a,const T &b){if(a>b){a=b;return true;}return false;} templatebool chmax(T &a,const T &b){if(avoid uniq(vector &v){sort(v.begin(),v.end());v.erase(unique(v.begin(),v.end()),v.end());} templatevoid print(pair a); templatevoid print(vector v); templatevoid print(vector> v); void print(){ putchar(' '); } void print(bool a){ printf("%d", a); } void print(int a){ printf("%d", a); } void print(long a){ printf("%ld", a); } void print(long long a){ printf("%lld", a); } void print(char a){ printf("%c", a); } void print(char a[]){ printf("%s", a); } void print(const char a[]){ printf("%s", a); } void print(long double a){ printf("%.15Lf", a); } void print(const string& a){ for(auto&& i : a) print(i); } void print(unsigned int a){ printf("%u", a); } void print(unsigned long long a) { printf("%llu", a); } template void print(const T& a){ cout << a; } int out(){ putchar('\n'); return 0; } template int out(const T& t){ print(t); putchar('\n'); return 0; } template int out(const Head& head, const Tail&... tail){ print(head); putchar(' '); out(tail...); return 0; } templatevoid print(pair a){print(a.first);print(),print(a.second);} templatevoid print(vector v){for(auto ite=v.begin();ite!=v.end();){print(*ite);if(++ite!=v.end())print();}} templatevoid print(vector> v){for(auto ite=v.begin();ite!=v.end();){print(*ite);if(++ite!=v.end())out();}} void yes(){out("Yes");} void no (){out("No");} void yn (bool t){if(t)yes();else no();} void fast_io(){cin.tie(0); ios::sync_with_stdio(0); cout< dx = {0,1,0,-1,1,1,-1,-1}; const vector dy = {1,0,-1,0,1,-1,-1,1}; const string ALP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; const string alp = "abcdefghijklmnopqrstuvwxyz"; const string NUM = "0123456789"; } // namespace noya2 using namespace noya2; using mint = modint998244353; //using mint = modint1000000007; //using mint = modint; void out(mint a){out(a.val());} void out(vector a){vector b(a.size()); rep(i,a.size()) b[i] = a[i].val(); out(b);} void out(vector> a){for (auto v : a) out(v);} istream &operator>>(istream &is,vector &v){for(auto &e:v){ll _x;is>>_x;e=_x;}return is;} #line 2 "dirichlet.hpp" /* https://maspypy.com/dirichlet-積と、数論関数の累積和 */ #line 11 "dirichlet.hpp" namespace noya2{ using namespace std; using ll = long long; using ld = long double; struct Dirichlet { int N; vector primes, factor, mu; Dirichlet (int Nmax = 1'000'000) : N(Nmax), factor(Nmax+1,0), mu(Nmax+1,1) { for(int n = 2; n <= N; n++) { if(factor[n] == 0) { primes.push_back(n); factor[n] = n; mu[n] = -1; } for(int p : primes) { if(n * p > N || p > factor[n]) break; factor[n * p] = p; mu[n * p] = p == factor[n] ? 0 : -mu[n]; } } } }; template T floor_sqrt(T x){ // floor(sqrt(x)) if (x <= T(1)) return x; T tmp = (T)(sqrtl((long double)(x))) + T(2); while (tmp--){ if (tmp * tmp <= x) break; } return tmp; } // proposition 4 template pair,vector> multiply_sparce(ll N, vector &a, vector &b, vector &A, vector &B){ ll K = a.size()-1, L = A.size()-1; // N <= K * L , K >= floor_sqrt(N) vector c(K+1,0); for (int i = 1; i <= K; i++){ for (int j = 1; i * j <= K; j++){ c[i*j] += a[i] * b[j]; } } vector arui(K+1,0), brui(K+1,0); for (int i = 1; i <= K; i++){ arui[i] = arui[i-1] + a[i]; brui[i] = brui[i-1] + b[i]; } ld Nd = N; vector C(L+1,0); for (ll l = 1; l <= L; l++){ ll n = Nd / ld(l); ll m = floor_sqrt(n); for (ll i = 1; i <= m; i++){ ll il = i*l; if (il <= L){ C[l] += a[i] * B[il]; // B[i] = B(N/i) } else { C[l] += a[i] * brui[int(Nd/ld(i*l))]; } } for (ll j = 1; j <= m; j++){ ll jl = j*l; ll r = Nd / ld(jl); // m < i <= n/j = r if (m >= r) continue; if (jl <= L){ C[l] += b[j] * (A[jl] - arui[m]); // A[i] = A(N/i) } else { C[l] += b[j] * (arui[r] - arui[m]); } } } return make_pair(c,C); } // proposition 5 template pair,vector> divide_sparce(ll N, vector &a, vector &c, vector &A, vector &C){ ll K = a.size()-1, L = A.size()-1; // N <= K * L , K >= floor_sqrt(N) vector b = c; for (int i = 1; i <= K; i++){ b[i] /= a[1]; for (int j = 2; i * j <= K; j++){ b[i*j] -= a[j] * b[i]; } } vector arui(K+1,0), brui(K+1,0); for (int i = 1; i <= K; i++){ arui[i] = arui[i-1] + a[i]; brui[i] = brui[i-1] + b[i]; } ld Nd = N; vector B = C; for (ll l = L; l >= 1; l--){ ll n = Nd / ld(l); ll m = floor_sqrt(n); for (ll j = 1; j <= m; j++){ ll jl = j*l; ll r = Nd / ld(jl); if (m >= r) continue; if (jl <= L){ B[l] -= b[j] * (A[jl] - arui[m]); } else { B[l] -= b[j] * (arui[r] - arui[m]); } } } for (ll l = L; l >= 1; l--){ ll n = Nd / ld(l); ll m = floor_sqrt(n); for (ll i = 2; i <= m; i++){ ll il = i*l; if (il <= L){ B[l] -= a[i] * B[il]; } else { B[l] -= a[i] * brui[int(Nd/ld(il))]; } } B[l] /= a[1]; } return make_pair(b,B); } pair KL(ll N){ ll K = max( ceill(powl(ld(N)/logl(N),ld(2)/ld(3))) , sqrtl(N) ); ll L = N / K + 1; return make_pair(K,L); } // usage : Totient_Sum(N) template T Totient_Sum(ll N){ if (N <= 0){ return T(0); } if (N == 1){ return T(1); } ll K = max( ceill(powl(ld(N)/logl(N),ld(2)/ld(3))) , sqrtl(N) ); ll L = N / K + 1; vector a(K+1,0), c(K+1,0); for (ll n = 1; n <= K; n++){ a[n] = 1; c[n] = n; } vector A(L+1,0), C(L+1,0); for (ll n = 1; n <= L; n++){ T m = N / n; A[n] = m; C[n] = m * (m+1) / 2; } return divide_sparce(N,a,c,A,C).second[1]; } // prefix sum of mobius function // n <= K ( K >= floor(sqrt(N)) ) or n = floor(N/i) ( for some i <= L ) template struct prefix_mu{ ll N, K, L; vector b, brui, B; prefix_mu(ll _N) : N(_N) { init(); } T get(ll n){ if (N <= 0){ return T(0); } if (n <= K){ return brui[n]; } return B[N/n]; } void init(){ if (N <= 0) return ; if (N == 1){ b = {0,1}; brui = {0,1}; B = {0,1}; return ; } K = max( ceill(powl(ld(N)/logl(N),ld(2)/ld(3))) , sqrtl(N) ); L = N / K + 1; vector a(K+1,1), c(K+1,0); a[0] = 0, c[1] = 1; vector A(L+1,0), C(L+1,1); C[0] = 0; for (ll n = 1; n <= L; n++){ ll m = N / n; A[n] = m; } auto bB = divide_sparce(N,a,c,A,C); b = bB.first, B = bB.second; brui.resize(K+1,0); for (ll n = 1; n <= K; n++){ brui[n] = brui[n-1] + b[n]; } } }; } // namespace noya2 /* random checker #include"dirichlet.hpp" #include"random_kyopro.hpp" void solve(){ int n = rnd(1,200000); vector a(n+1), b(n+1); //cin >> a >> b; for (int i = 1; i <= n; i++){ a[i] = rnd(10000); b[i] = rnd(10000); } vector c(n+1,0); for (int i = 1; i <= n; i++){ for (int j = 1; i * j <= n; j++){ c[i*j] += a[i] * b[j]; } } vector arui(n+1,0), brui(n+1,0), crui(n+1,0); rep(i,n){ arui[i+1] = arui[i] + a[i+1]; brui[i+1] = brui[i] + b[i+1]; crui[i+1] = crui[i] + c[i+1]; } int s = floor_sqrt(n); vector ap(s+1), bp(s+1); rep(i,s+1){ ap[i] = a[i]; bp[i] = b[i]; } int t = n/s+2; vector Ap(t+1), Bp(t+1); repp(i,t+1,1){ Ap[i] = arui[n/i]; Bp[i] = brui[n/i]; } auto [cp, Cp] = multiply_sparce(n,ap,bp,Ap,Bp); auto [bq, Bq] = divide_sparce(n,ap,cp,Ap,Cp); for (int i = 1; i <= s; i++){ assert(c[i] == cp[i]); } for (int i = 1; i <= t; i++){ assert(crui[n/i] == Cp[i]); } assert(bp == bq); assert(Bp == Bq); //out(a), out(b), out(arui), out(brui); //out(c), out(crui); //out(ap); out(Ap); //out(bp); out(Bp); //out(cp); out(Cp); //out(bq); out(Bq); } */ #line 78 "c.cpp" void solve(){ const int mx = 10000000; Dirichlet dir(mx); vector phi(mx+1); phi[1] = 1; for (int d = 2; d <= mx; d++){ int p = dir.factor[d]; phi[d] = p-1; int cur = d; while (cur % p == 0){ phi[d] *= p; cur /= p; } phi[d] /= p; phi[d] *= phi[cur]; } for (int d = 2; d <= mx; d++){ phi[d] += phi[d-1]; } int t; cin >> t; while (t--){ ll n; cin >> n; ll ans = n * (n-1) + 1; ans -= phi[n]; out(ans); } } int main(){ fast_io(); int t = 1; //cin >> t; while(t--) solve(); }