#include #include #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #define FOR1(a) for (ll _ = 0; _ < ll(a); ++_) #define FOR2(i, a) for (ll i = 0; i < ll(a); ++i) #define FOR3(i, a, b) for (ll i = a; i < ll(b); ++i) #define FOR4(i, a, b, c) for (ll i = a; i < ll(b); i += (c)) #define FOR1_R(a) for (ll i = (a)-1; i >= ll(0); --i) #define FOR2_R(i, a) for (ll i = (a)-1; i >= ll(0); --i) #define FOR3_R(i, a, b) for (ll i = (b)-1; i >= ll(a); --i) #define overload4(a, b, c, d, e, ...) e #define overload3(a, b, c, d, ...) d #define FOR(...) overload4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__) #define FOR_R(...) overload3(__VA_ARGS__, FOR3_R, FOR2_R, FOR1_R)(__VA_ARGS__) #define sz(c) ((int)(c).size()) #define ten(x) ((int)1e##x) #define all(v) (v).begin(), (v).end() using namespace std; using ll=long long; using i128=__int128; using P = pair; const long double PI=acos(-1); const ll INF=1e18; const int inf=1e9; struct Edge { ll to; ll cost; }; using Graph=vector>; template bool chmax(T &a,const T& b){ if (a bool chmin(T &a,const T& b){ if (a>b){ a=b; return true; } return false; } template struct Fp{ ll val; constexpr Fp(long long v = 0) noexcept : val(v % MOD) { if (val < 0) val += MOD; } static constexpr int getmod() { return MOD; } constexpr Fp operator - () const noexcept { return val ? MOD - val : 0; } constexpr Fp operator + (const Fp& r) const noexcept { return Fp(*this) += r; } constexpr Fp operator - (const Fp& r) const noexcept { return Fp(*this) -= r; } constexpr Fp operator * (const Fp& r) const noexcept { return Fp(*this) *= r; } constexpr Fp operator / (const Fp& r) const noexcept { return Fp(*this) /= r; } constexpr Fp& operator += (const Fp& r) noexcept { val += r.val; if (val >= MOD) val -= MOD; return *this; } constexpr Fp& operator -= (const Fp& r) noexcept { val -= r.val; if (val < 0) val += MOD; return *this; } constexpr Fp& operator *= (const Fp& r) noexcept { val = val * r.val % MOD; return *this; } constexpr Fp& operator /= (const Fp& r) noexcept { ll a = r.val, b = MOD, u = 1, v = 0; while (b) { ll t = a / b; a -= t * b, swap(a, b); u -= t * v, swap(u, v); } val = val * u % MOD; if (val < 0) val += MOD; return *this; } constexpr bool operator == (const Fp& r) const noexcept { return this->val == r.val; } constexpr bool operator != (const Fp& r) const noexcept { return this->val != r.val; } constexpr bool operator < (const Fp& r) const noexcept { return this->val < r.val; } friend constexpr istream& operator >> (istream& is, Fp& x) noexcept { is >> x.val; x.val %= MOD; if (x.val < 0) x.val += MOD; return is; } friend constexpr ostream& operator << (ostream& os, const Fp& x) noexcept { return os << x.val; } friend constexpr Fp modpow(const Fp& a, long long n) noexcept { Fp res=1,r=a; while(n){ if(n&1) res*=r; r*=r; n>>=1; } return res; } friend constexpr Fp modinv(const Fp& r) noexcept { long long a = r.val, b = MOD, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b, swap(a, b); u -= t * v, swap(u, v); } return Fp(u); } ll get(){ return val; } explicit operator bool()const{ return val; } }; template< uint32_t mod, bool fast = false > struct MontgomeryModInt { using mint = MontgomeryModInt; using i32 = int32_t; using i64 = int64_t; using u32 = uint32_t; using u64 = uint64_t; static constexpr u32 get_r() { u32 ret = mod; for(i32 i = 0; i < 4; i++) ret *= 2 - mod * ret; return ret; } static constexpr u32 r = get_r(); static constexpr u32 n2 = -u64(mod) % mod; static_assert(r * mod == 1, "invalid, r * mod != 1"); static_assert(mod < (1 << 30), "invalid, mod >= 2 ^ 30"); static_assert((mod & 1) == 1, "invalid, mod % 2 == 0"); u32 a; MontgomeryModInt() : a{} {} MontgomeryModInt(const i64 &x) : a(reduce(u64(fast ? x : (x % mod + mod)) * n2)) {} static constexpr u32 reduce(const u64 &b) { return u32(b >> 32) + mod - u32((u64(u32(b) * r) * mod) >> 32); } constexpr mint& operator+=(const mint &p) { if(i32(a += p.a - 2 * mod) < 0) a += 2 * mod; return *this; } constexpr mint& operator-=(const mint &p) { if(i32(a -= p.a) < 0) a += 2 * mod; return *this; } constexpr mint& operator*=(const mint &p) { a = reduce(u64(a) * p.a); return *this; } constexpr mint& operator/=(const mint &p) { *this *= modinv(p); return *this; } constexpr mint operator-() const { return mint() - *this; } constexpr mint operator+(const mint &p) const { return mint(*this) += p; } constexpr mint operator-(const mint &p) const { return mint(*this) -= p; } constexpr mint operator*(const mint &p) const { return mint(*this) *= p; } constexpr mint operator/(const mint &p) const { return mint(*this) /= p; } constexpr bool operator==(const mint &p) const { return (a >= mod ? a - mod : a) == (p.a >= mod ? p.a - mod : p.a); } constexpr bool operator!=(const mint &p) const { return (a >= mod ? a - mod : a) != (p.a >= mod ? p.a - mod : p.a); } u32 get() const { u32 ret = reduce(a); return ret >= mod ? ret - mod : ret; } friend constexpr MontgomeryModInt modpow(const MontgomeryModInt &x,u64 n) noexcept { MontgomeryModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend constexpr MontgomeryModInt modinv(const MontgomeryModInt &r) noexcept { u64 a = r.get(), b = mod, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b, swap(a, b); u -= t * v, swap(u, v); } return MontgomeryModInt(u); } friend ostream &operator<<(ostream &os, const mint &p) { return os << p.get(); } friend istream &operator>>(istream &is, mint &a) { i64 t; is >> t; a = mint(t); return is; } static constexpr u32 getmod() { return mod; } }; ll mod(ll a, ll mod) { return (a%mod+mod)%mod; } ll modpow(ll a,ll n,ll mod){ ll res=1; a%=mod; while (n>0){ if (n & 1) res*=a; a *= a; a%=mod; n >>= 1; res%=mod; } return res; } vector

prime_factorize(ll N) { vector

res; for (ll a = 2; a * a <= N; ++a) { if (N % a != 0) continue; ll ex = 0; while(N % a == 0){ ++ex; N /= a; } res.push_back({a, ex}); } if (N != 1) res.push_back({N, 1}); return res; } ll modinv(ll a, ll mod) { ll b = mod, u = 1, v = 0; while (b) { ll t = a/b; a -= t * b, swap(a, b); u -= t * v, swap(u, v); } u %= mod; if (u < 0) u += mod; return u; } ll extGcd(ll a, ll b, ll &p, ll &q) { if (b == 0) { p = 1; q = 0; return a; } ll d = extGcd(b, a%b, q, p); q -= a/b * p; return d; } P ChineseRem(const vector &b, const vector &m) { ll r = 0, M = 1; for (int i = 0; i < (int)b.size(); ++i) { ll p, q; ll d = extGcd(M, m[i], p, q); if ((b[i] - r) % d != 0) return make_pair(0, -1); ll tmp = (b[i] - r) / d * p % (m[i]/d); r += M * tmp; M *= m[i]/d; } return make_pair(mod(r, M), M); } #include namespace fastio { #define FASTIO struct has_write_impl { template static auto check(T &&x) -> decltype(x.write(), std::true_type{}); template static auto check(...) -> std::false_type; }; template class has_write : public decltype(has_write_impl::check(std::declval())) { }; struct has_read_impl { template static auto check(T &&x) -> decltype(x.read(), std::true_type{}); template static auto check(...) -> std::false_type; }; template class has_read : public decltype(has_read_impl::check(std::declval())) {}; struct Scanner { FILE *fp; char line[(1 << 15) + 1]; size_t st = 0, ed = 0; void reread() { memmove(line, line + st, ed - st); ed -= st; st = 0; ed += fread(line + ed, 1, (1 << 15) - ed, fp); line[ed] = '\0'; } bool succ() { while (true) { if (st == ed) { reread(); if (st == ed) return false; } while (st != ed && isspace(line[st])) st++; if (st != ed) break; } if (ed - st <= 50) { bool sep = false; for (size_t i = st; i < ed; i++) { if (isspace(line[i])) { sep = true; break; } } if (!sep) reread(); } return true; } template ::value, int> = 0> bool read_single(T &ref) { if (!succ()) return false; while (true) { size_t sz = 0; while (st + sz < ed && !isspace(line[st + sz])) sz++; ref.append(line + st, sz); st += sz; if (!sz || st != ed) break; reread(); } return true; } template ::value, int> = 0> bool read_single(T &ref) { if (!succ()) return false; bool neg = false; if (line[st] == '-') { neg = true; st++; } ref = T(0); while (isdigit(line[st])) { ref = 10 * ref + (line[st++] & 0xf); } if (neg) ref = -ref; return true; } template ::value>::type * = nullptr> inline bool read_single(T &x) { x.read(); return true; } bool read_single(double &ref) { string s; if (!read_single(s)) return false; ref = std::stod(s); return true; } bool read_single(char &ref) { string s; if (!read_single(s) || s.size() != 1) return false; ref = s[0]; return true; } template bool read_single(vector &ref) { for (auto &d: ref) { if (!read_single(d)) return false; } return true; } template bool read_single(pair &p) { return (read_single(p.first) && read_single(p.second)); } template void read_single_tuple(T &t) { if constexpr (N < std::tuple_size::value) { auto &x = std::get(t); read_single(x); read_single_tuple(t); } } template bool read_single(tuple &tpl) { read_single_tuple(tpl); return true; } void read() {} template void read(H &h, T &... t) { bool f = read_single(h); assert(f); read(t...); } Scanner(FILE *fp) : fp(fp) {} }; struct Printer { Printer(FILE *_fp) : fp(_fp) {} ~Printer() { flush(); } static constexpr size_t SIZE = 1 << 15; FILE *fp; char line[SIZE], small[50]; size_t pos = 0; void flush() { fwrite(line, 1, pos, fp); pos = 0; } void write(const char val) { if (pos == SIZE) flush(); line[pos++] = val; } template ::value, int> = 0> void write(T val) { if (pos > (1 << 15) - 50) flush(); if (val == 0) { write('0'); return; } if (val < 0) { write('-'); val = -val; // todo min } size_t len = 0; while (val) { small[len++] = char(0x30 | (val % 10)); val /= 10; } for (size_t i = 0; i < len; i++) { line[pos + i] = small[len - 1 - i]; } pos += len; } void write(const string s) { for (char c: s) write(c); } void write(const char *s) { size_t len = strlen(s); for (size_t i = 0; i < len; i++) write(s[i]); } void write(const double x) { ostringstream oss; oss << fixed << setprecision(15) << x; string s = oss.str(); write(s); } void write(const long double x) { ostringstream oss; oss << fixed << setprecision(15) << x; string s = oss.str(); write(s); } template ::value>::type * = nullptr> inline void write(T x) { x.write(); } template void write(const vector val) { auto n = val.size(); for (size_t i = 0; i < n; i++) { if (i) write(' '); write(val[i]); } } template void write(const pair val) { write(val.first); write(' '); write(val.second); } template void write_tuple(const T t) { if constexpr (N < std::tuple_size::value) { if constexpr (N > 0) { write(' '); } const auto x = std::get(t); write(x); write_tuple(t); } } template bool write(tuple tpl) { write_tuple(tpl); return true; } template void write(const array val) { auto n = val.size(); for (size_t i = 0; i < n; i++) { if (i) write(' '); write(val[i]); } } void write(i128 val) { string s; bool negative = 0; if (val < 0) { negative = 1; val = -val; } while (val) { s += '0' + int(val % 10); val /= 10; } if (negative) s += "-"; reverse(all(s)); if (sz(s) == 0) s = "0"; write(s); } }; Scanner scanner = Scanner(stdin); Printer printer = Printer(stdout); void flush() { printer.flush(); } void print() { printer.write('\n'); } template void print(Head &&head, Tail &&... tail) { printer.write(head); if (sizeof...(Tail)) printer.write(' '); print(forward(tail)...); } void print2() {} template void print2(Head &&head, Tail &&... tail){ printer.write(head); if(sizeof...(Tail)) printer.write(' '); print2(forward(tail)...); } void read() {} template void read(Head &head, Tail &... tail) { scanner.read(head); read(tail...); } } // namespace fastio using fastio::print; using fastio::flush; using fastio::read; using fastio::printer; using fastio::print2; constexpr bool is_prime(int n) { if (n <= 1) return false; if (n == 2 || n == 7 || n == 61) return true; if (n % 2 == 0) return false; long long d = n - 1; while (d % 2 == 0) d /= 2; constexpr long long bases[3] = {2, 7, 61}; for (long long a : bases) { long long t = d; long long y = modpow(a, t, n); while (t != n - 1 && y != 1 && y != n - 1) { y = y * y % n; t <<= 1; } if (y != n - 1 && t % 2 == 0) { return false; } } return true; } template< typename T > struct Combination { vector< T > _fact, _rfact, _inv; Combination(int sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) { _fact[0] = _rfact[sz] = _inv[0] = 1; for(int i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i; _rfact[sz] /= _fact[sz]; for(int i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1); for(int i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1]; } inline T fact(int k) const { return _fact[k]; } inline T rfact(int k) const { return _rfact[k]; } inline T inv(int k) const { return _inv[k]; } T P(int n, int r) const { if(r < 0 || n < r) return 0; return fact(n) * rfact(n - r); } T C(int p, int q) const { if(q < 0 || p < q) return 0; return fact(p) * rfact(q) * rfact(p - q); } T H(int n, int r) const { if(n < 0 || r < 0) return (0); return r == 0 ? 1 : C(n + r - 1, r); } }; ll rand_int(ll l, ll r) { //[l, r] #ifdef LOCAL static mt19937_64 gen; #else static random_device rd; static mt19937_64 gen(rd()); #endif return uniform_int_distribution(l, r)(gen); } template struct SegmentTree{ int n; vector dat; SegmentTree(int N){ n=1; while(n>=1; dat[k]=op(dat[k*2],dat[k*2+1]); } } void apply(int k,T x){ k+=n; dat[k]=op(dat[k],x); while(k){ k>>=1; dat[k]=op(dat[k*2],dat[k*2+1]); } } void set(int k,T x){ k+=n; dat[k]=x; while(k){ k>>=1; dat[k]=op(dat[k*2],dat[k*2+1]); } } T query(int l,int r){ T prodl=e(),prodr=e(); l+=n; r+=n; while(l>=1; r>>=1; } return op(prodl,prodr); } }; template struct LazySegTree{ private: int _n,size=1,idx=0; vectorseq; vectorlazy; void update(int k){seq[k]=op(seq[2*k],seq[2*k+1]);} void all_apply(int k,F f){ seq[k]=mapping(f,seq[k]); if(k(n,e())){} LazySegTree(const vector&v):_n(int(v.size())){ while(size<_n)size<<=1,idx++; seq=vector(2*size,e()); lazy=vector(2*size,id()); for(int i=0;i<_n;i++)seq[size+i]=v[i]; for(int i=size-1;i>=1;i--)update(i); } void set(int p,S x){ p+=size; for(int i=idx;i>=1;i--)eval(p>>i); seq[p]=x; for(int i=1;i<=idx;i++)update(p>>i); } void add(int p,S x){ p+=size; for(int i=idx;i>=1;i--)eval(p>>i); seq[p]+=x; for(int i=1;i<=idx;i++)update(p>>i); } S operator[](int p){ p+=size; for(int i=idx;i>=1;i--)eval(p>>i); return seq[p]; } S query(int l,int r){ if(l==r)return e(); S sml=e(),smr=e(); l+=size,r+=size; for(int i=idx;i>=1;i--){ if(((l>>i)<>i); if(((r>>i)<>i); } while(l>=1,r>>=1; } return op(sml,smr); } S all_query()const{return seq[1];} void apply(int p,F f){ p+=size; for(int i=idx;i>=1;i--)eval(p>>i); seq[p]=mapping(f,seq[p]); for(int i=1;i<=idx;i++)update(p>>i); } void apply(int l,int r,F f){ if(l==r)return ; l+=size; r+=size; for(int i=idx;i>=1;i--){ if(((l>>i)<>i); if(((r>>i)<>i); } int l2=l,r2=r; while(l>=1; r>>=1; } l=l2,r=r2; for(int i=1;i<=idx;i++){ if(((l>>i)<>i); if(((r>>i)<>i); } } }; template< typename flow_t > struct MFGraph{ static_assert(is_integral< flow_t >::value, "template parameter flow_t must be integral type"); const flow_t INF; struct edge { int to; flow_t cap; int rev; bool isrev; int idx; }; vector< vector< edge > > graph; vector< int > min_cost, iter; flow_t max_cap; int SZ; explicit MFGraph(int V) : INF(numeric_limits< flow_t >::max()), graph(V), max_cap(0), SZ(V) {} void add_edge(int from, int to, flow_t cap, int idx = -1) { max_cap = max(max_cap, cap); graph[from].emplace_back((edge) {to, cap, (int) graph[to].size(), false, idx}); graph[to].emplace_back((edge) {from, 0, (int) graph[from].size() - 1, true, idx}); } bool build_augment_path(int s, int t, const flow_t &base) { min_cost.assign(graph.size(), -1); queue< int > que; min_cost[s] = 0; que.push(s); while(!que.empty() && min_cost[t] == -1) { int p = que.front(); que.pop(); for(auto &e : graph[p]) { if(e.cap >= base && min_cost[e.to] == -1) { min_cost[e.to] = min_cost[p] + 1; que.push(e.to); } } } return min_cost[t] != -1; } flow_t find_augment_path(int idx, const int t, flow_t base, flow_t flow) { if(idx == t) return flow; flow_t sum = 0; for(int &i = iter[idx]; i < (int)graph[idx].size(); i++) { edge &e = graph[idx][i]; if(e.cap >= base && min_cost[idx] < min_cost[e.to]) { flow_t d = find_augment_path(e.to, t, base, min(flow - sum, e.cap)); if(d > 0) { e.cap -= d; graph[e.to][e.rev].cap += d; sum += d; if(flow - sum < base) break; } } } return sum; } flow_t max_flow(int s, int t) { if(max_cap == flow_t(0)) return flow_t(0); flow_t flow = 0; for(int i = 63 - __builtin_clzll(max_cap); i >= 0; i--) { flow_t now = flow_t(1) << i; while(build_augment_path(s, t, now)) { iter.assign(graph.size(), 0); flow += find_augment_path(s, t, now, INF); } } return flow; } //after max_flow(s,t) vector min_cut(int s) { vector visited(SZ); queue que; que.push(s); while (!que.empty()) { int p = que.front(); que.pop(); visited[p] = true; for (auto e : graph[p]) { if (e.cap && !visited[e.to]) { visited[e.to] = true; que.push(e.to); } } } return visited; } void output() { for(int i = 0; i < graph.size(); i++) { for(auto &e : graph[i]) { if(e.isrev) continue; auto &rev_e = graph[e.to][e.rev]; cout << i << "->" << e.to << " (flow: " << rev_e.cap << "/" << e.cap + rev_e.cap << ")" << endl; } } } }; template< typename flow_t, typename cost_t > struct MCFGraph{ struct edge { int to; flow_t cap; cost_t cost; int rev; bool isrev; }; vector< vector< edge > > graph; vector< cost_t > potential, min_cost; vector< int > prevv, preve; const cost_t INF; MCFGraph(int V) : graph(V), INF(numeric_limits< cost_t >::max()) {} void add_edge(int from, int to, flow_t cap, cost_t cost) { graph[from].emplace_back((edge) {to, cap, cost, (int) graph[to].size(), false}); graph[to].emplace_back((edge) {from, 0, -cost, (int) graph[from].size() - 1, true}); } cost_t min_cost_flow(int s, int t, flow_t f) { int V = (int) graph.size(); cost_t ret = 0; using Pi = pair< cost_t, int >; priority_queue< Pi, vector< Pi >, greater< Pi > > que; potential.assign(V, 0); preve.assign(V, -1); prevv.assign(V, -1); while(f > 0) { min_cost.assign(V, INF); que.emplace(0, s); min_cost[s] = 0; while(!que.empty()) { Pi p = que.top(); que.pop(); if(min_cost[p.second] < p.first) continue; for(int i = 0; i < (int)graph[p.second].size(); i++) { edge &e = graph[p.second][i]; cost_t nextCost = min_cost[p.second] + e.cost + potential[p.second] - potential[e.to]; if(e.cap > 0 && min_cost[e.to] > nextCost) { min_cost[e.to] = nextCost; prevv[e.to] = p.second, preve[e.to] = i; que.emplace(min_cost[e.to], e.to); } } } if(min_cost[t] == INF) return -1; for(int v = 0; v < V; v++) potential[v] += min_cost[v]; flow_t addflow = f; for(int v = t; v != s; v = prevv[v]) { addflow = min(addflow, graph[prevv[v]][preve[v]].cap); } f -= addflow; ret += addflow * potential[t]; for(int v = t; v != s; v = prevv[v]) { edge &e = graph[prevv[v]][preve[v]]; e.cap -= addflow; graph[v][e.rev].cap += addflow; } } return ret; } void output() { for(int i = 0; i < graph.size(); i++) { for(auto &e : graph[i]) { if(e.isrev) continue; auto &rev_e = graph[e.to][e.rev]; cout << i << "->" << e.to << " (flow: " << rev_e.cap << "/" << rev_e.cap + e.cap << ")" << endl; } } } }; struct UnionFind{ int n; vector data; vector edge_num; UnionFind(int N) : n(N) , data(N,-1) , edge_num(N,0){} int root(int x){ // データxが属する木の根を再帰で得る:root(x) = {xの木の根} return data[x]<0?x:data[x]=root(data[x]); } void unite(int x, int y) { x=root(x); y=root(y); if(x!=y){ if (data[x]>data[y]) swap(x, y); data[x]+=data[y]; data[y]=x; } if(x!=y){ edge_num[x]+=edge_num[y]; edge_num[y]=0; } edge_num[x]+=1; } bool same(int x, int y){ // 2つのデータx, yが属する木が同じならtrueを返す return root(x)==root(y); } int size(int x){ return -data[root(x)]; } int edge(int x){ return edge_num[root(x)]; } vector get_roots(){ vector res; for(int i=0;i enum_divisors(ll N){ vector res; for (ll i = 1; i * i <= N; ++i){ if (N % i == 0){ res.push_back(i); // 重複しないならば i の相方である N/i も push if (N/i != i) res.push_back(N/i); } } // 小さい順に並び替える sort(res.begin(), res.end()); return res; } using mint=MontgomeryModInt<998244353>; #define in(...) read(__VA_ARGS__) #define LL(...) ll __VA_ARGS__;in(__VA_ARGS__) #define INT(...) int __VA_ARGS__;in(__VA_ARGS__) #define STR(...) string __VA_ARGS__;in(__VA_ARGS__) #define outln(...) print(__VA_ARGS__) #define out(...) print2(__VA_ARGS__) #define outspace(...) print2(__VA_ARGS__),printer.write(' ') #define rall(v) (v).rbegin(), (v).rend() #define fi first #define se second #define endl '\n' using i128=__int128_t; struct LowerHull{ struct Point{ ll x; i128 y; }; vector h; void add(ll x,i128 y){ Point p{x,y}; if(!h.empty()&&h.back().x==x) return; while (h.size() >= 2) { auto a=h[h.size()-2],b=h.back(); if((i128)(b.x-a.x)*(y-a.y)>(b.y-a.y)*(x-a.x)) break; h.pop_back(); } h.push_back(p); } //min(y + k*x) i128 query(i128 k) const { auto f=[&](int i){ return h[i].y+k*h[i].x; }; int l=0,r=(int)h.size()-1; while(l a(n),xs; FOR(i,n){ in(a[i]); a[i]%=m; xs.push_back(a[i]); } vector> qs(q); FOR(i,q){ in(qs[i].fi,qs[i].se); qs[i].fi--; qs[i].se%=m; xs.push_back(qs[i].se); } sort(all(xs)); xs.erase(unique(all(xs)),xs.end()); auto id=[&](ll x){ return int(lower_bound(all(xs),x)-xs.begin()); }; int K=xs.size(),B=max(1,(int)(2*sqrt(K))); int nb=(K+B-1)/B; vector c(K),lazyC(nb); vector p(K),lazyP(nb); vector hull(nb); FOR(i,n) c[id(a[i])]++; ll S=0,D=0; int cnt=0; FOR(i,K){ int f=c[i]; D+=(ll)((i128)f*((i128)cnt*xs[i]-S)); S+=(ll)f*xs[i]; cnt+=f; c[i]=cnt; p[i]=S; } auto rebuild=[&](int b){ hull[b].h.clear(); FOR(i,b*B,min(K,(b+1)*B)) hull[b].add(c[i],(i128)2*n*p[i]-(i128)m*c[i]*c[i]); }; auto suffix=[&](int i,int dc,ll dp){ int b=i/B; if(i%B){ FOR(j,i,min(K,(b+1)*B)){ c[j]+=dc; p[j]+=dp; } rebuild(b++); } for(;b