QOJ.ac
QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #222220 | #7608. Cliques | ucup-team112# | WA | 1ms | 3740kb | C++17 | 23.7kb | 2023-10-21 16:20:12 | 2023-10-21 16:20:12 |
Judging History
answer
//#define _GLIBCXX_DEBUG
//#pragma GCC target("avx2")
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include <debug_print.hpp>
#define OUT(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define OUT(...) (static_cast<void>(0))
#endif
#define endl '\n'
#define lfs cout<<fixed<<setprecision(15)
#define ALL(a) (a).begin(),(a).end()
#define ALLR(a) (a).rbegin(),(a).rend()
#define UNIQUE(a) (a).erase(unique((a).begin(),(a).end()),(a).end())
#define spa << " " <<
#define fi first
#define se second
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define EB emplace_back
#define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++)
#define rrep(i,n,m) for(ll i = (ll)(m) - 1; i >= (ll)(n); i--)
using ll = long long;
using ld = long double;
const ll MOD1 = 1e9+7;
const ll MOD9 = 998244353;
const ll INF = 1e18;
using P = pair<ll, ll>;
template<typename T> using PQ = priority_queue<T>;
template<typename T> using QP = priority_queue<T,vector<T>,greater<T>>;
template<typename T1, typename T2>bool chmin(T1 &a,T2 b){if(a>b){a=b;return true;}else return false;}
template<typename T1, typename T2>bool chmax(T1 &a,T2 b){if(a<b){a=b;return true;}else return false;}
ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
template<typename T1,typename T2>void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}
template<typename T1,typename T2,typename T3>void anss(T1 x,T2 y,T3 z){ans(x!=y,x,z);};
template<typename T>void debug(const T &v,ll h,ll w,string sv=" "){for(ll i=0;i<h;i++){cout<<v[i][0];for(ll j=1;j<w;j++)cout<<sv<<v[i][j];cout<<endl;}};
template<typename T>void debug(const T &v,ll n,string sv=" "){if(n!=0)cout<<v[0];for(ll i=1;i<n;i++)cout<<sv<<v[i];cout<<endl;};
template<typename T>void debug(const vector<T>&v){debug(v,v.size());}
template<typename T>void debug(const vector<vector<T>>&v){for(auto &vv:v)debug(vv,vv.size());}
template<typename T>void debug(stack<T> st){while(!st.empty()){cout<<st.top()<<" ";st.pop();}cout<<endl;}
template<typename T>void debug(queue<T> st){while(!st.empty()){cout<<st.front()<<" ";st.pop();}cout<<endl;}
template<typename T>void debug(deque<T> st){while(!st.empty()){cout<<st.front()<<" ";st.pop_front();}cout<<endl;}
template<typename T>void debug(PQ<T> st){while(!st.empty()){cout<<st.top()<<" ";st.pop();}cout<<endl;}
template<typename T>void debug(QP<T> st){while(!st.empty()){cout<<st.top()<<" ";st.pop();}cout<<endl;}
template<typename T>void debug(const set<T>&v){for(auto z:v)cout<<z<<" ";cout<<endl;}
template<typename T>void debug(const multiset<T>&v){for(auto z:v)cout<<z<<" ";cout<<endl;}
template<typename T,size_t size>void debug(const array<T, size> &a){for(auto z:a)cout<<z<<" ";cout<<endl;}
template<typename T,typename V>void debug(const map<T,V>&v){for(auto z:v)cout<<"["<<z.first<<"]="<<z.second<<",";cout<<endl;}
template<typename T>vector<vector<T>>vec(ll x, ll y, T w){vector<vector<T>>v(x,vector<T>(y,w));return v;}
vector<ll>dx={1,-1,0,0,1,1,-1,-1};vector<ll>dy={0,0,1,-1,1,-1,1,-1};
template<typename T>vector<T> make_v(size_t a,T b){return vector<T>(a,b);}
template<typename... Ts>auto make_v(size_t a,Ts... ts){return vector<decltype(make_v(ts...))>(a,make_v(ts...));}
template<typename T1, typename T2>ostream &operator<<(ostream &os, const pair<T1, T2>&p){return os << "(" << p.first << "," << p.second << ")";}
template<typename T>ostream &operator<<(ostream &os, const vector<T> &v){os<<"[";for(auto &z:v)os << z << ",";os<<"]"; return os;}
template<typename T>void rearrange(vector<int>&ord, vector<T>&v){
auto tmp = v;
for(int i=0;i<tmp.size();i++)v[i] = tmp[ord[i]];
}
template<typename Head, typename... Tail>void rearrange(vector<int>&ord,Head&& head, Tail&&... tail){
rearrange(ord, head);
rearrange(ord, tail...);
}
template<typename T> vector<int> ascend(const vector<T>&v){
vector<int>ord(v.size());iota(ord.begin(),ord.end(),0);
sort(ord.begin(),ord.end(),[&](int i,int j){return make_pair(v[i],i)<make_pair(v[j],j);});
return ord;
}
template<typename T> vector<int> descend(const vector<T>&v){
vector<int>ord(v.size());iota(ord.begin(),ord.end(),0);
sort(ord.begin(),ord.end(),[&](int i,int j){return make_pair(v[i],-i)>make_pair(v[j],-j);});
return ord;
}
template<typename T> vector<T> inv_perm(const vector<T>&ord){
vector<T>inv(ord.size());
for(int i=0;i<ord.size();i++)inv[ord[i]] = i;
return inv;
}
ll FLOOR(ll n,ll div){assert(div>0);return n>=0?n/div:(n-div+1)/div;}
ll CEIL(ll n,ll div){assert(div>0);return n>=0?(n+div-1)/div:n/div;}
ll digitsum(ll n){ll ret=0;while(n){ret+=n%10;n/=10;}return ret;}
ll modulo(ll n,ll d){return (n%d+d)%d;};
template<typename T>T min(const vector<T>&v){return *min_element(v.begin(),v.end());}
template<typename T>T max(const vector<T>&v){return *max_element(v.begin(),v.end());}
template<typename T>T acc(const vector<T>&v){return accumulate(v.begin(),v.end(),T(0));};
template<typename T>T reverse(const T &v){return T(v.rbegin(),v.rend());};
//mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
int popcount(ll x){return __builtin_popcountll(x);};
int poplow(ll x){return __builtin_ctzll(x);};
int pophigh(ll x){return 63 - __builtin_clzll(x);};
template<typename T>T poll(queue<T> &q){auto ret=q.front();q.pop();return ret;};
template<typename T>T poll(priority_queue<T> &q){auto ret=q.top();q.pop();return ret;};
template<typename T>T poll(QP<T> &q){auto ret=q.top();q.pop();return ret;};
template<typename T>T poll(stack<T> &s){auto ret=s.top();s.pop();return ret;};
ll MULT(ll x,ll y){if(LLONG_MAX/x<=y)return LLONG_MAX;return x*y;}
ll POW2(ll x, ll k){ll ret=1,mul=x;while(k){if(mul==LLONG_MAX)return LLONG_MAX;if(k&1)ret=MULT(ret,mul);mul=MULT(mul,mul);k>>=1;}return ret;}
ll POW(ll x, ll k){ll ret=1;for(int i=0;i<k;i++){if(LLONG_MAX/x<=ret)return LLONG_MAX;ret*=x;}return ret;}
namespace converter{
int dict[500];
const string lower="abcdefghijklmnopqrstuvwxyz";
const string upper="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const string digit="0123456789";
const string digit1="123456789";
void regi_str(const string &t){
for(int i=0;i<t.size();i++){
dict[t[i]]=i;
}
}
void regi_int(const string &t){
for(int i=0;i<t.size();i++){
dict[i]=t[i];
}
}
vector<int>to_int(const string &s,const string &t){
regi_str(t);
vector<int>ret(s.size());
for(int i=0;i<s.size();i++){
ret[i]=dict[s[i]];
}
return ret;
}
vector<int>to_int(const string &s){
auto t=s;
sort(t.begin(),t.end());
t.erase(unique(t.begin(),t.end()),t.end());
return to_int(s,t);
}
vector<vector<int>>to_int(const vector<string>&s,const string &t){
regi_str(t);
vector<vector<int>>ret(s.size(),vector<int>(s[0].size()));
for(int i=0;i<s.size();i++){
for(int j=0;j<s[0].size();j++){
ret[i][j]=dict[s[i][j]];
}
}
return ret;
}
vector<vector<int>>to_int(const vector<string>&s){
string t;
for(int i=0;i<s.size();i++){
t+=s[i];
}
sort(t.begin(),t.end());t.erase(unique(t.begin(),t.end()),t.end());
return to_int(s,t);
}
string to_str(const vector<int>&s,const string &t){
regi_int(t);
string ret;
for(auto z:s)ret+=dict[z];
return ret;
}
vector<string> to_str(const vector<vector<int>>&s,const string &t){
regi_int(t);
vector<string>ret(s.size());
for(int i=0;i<s.size();i++){
for(auto z:s[i])ret[i]+=dict[z];
}
return ret;
}
}
template< typename T = int >
struct edge {
int to;
T cost;
int id;
edge():to(-1),id(-1){};
edge(int to, T cost = 1, int id = -1):to(to), cost(cost), id(id){}
operator int() const { return to; }
};
template<typename T>
using Graph = vector<vector<edge<T>>>;
template<typename T>
Graph<T>revgraph(const Graph<T> &g){
Graph<T>ret(g.size());
for(int i=0;i<g.size();i++){
for(auto e:g[i]){
int to = e.to;
e.to = i;
ret[to].push_back(e);
}
}
return ret;
}
template<typename T>
Graph<T> readGraph(int n,int m,int indexed=1,bool directed=false,bool weighted=false){
Graph<T> ret(n);
for(int es = 0; es < m; es++){
int u,v;
T w=1;
cin>>u>>v;u-=indexed,v-=indexed;
if(weighted)cin>>w;
ret[u].emplace_back(v,w,es);
if(!directed)ret[v].emplace_back(u,w,es);
}
return ret;
}
template<typename T>
Graph<T> readParent(int n,int indexed=1,bool directed=true){
Graph<T>ret(n);
for(int i=1;i<n;i++){
int p;cin>>p;
p-=indexed;
ret[p].emplace_back(i);
if(!directed)ret[i].emplace_back(p);
}
return ret;
}
template< int mod >
struct ModInt {
int x;
ModInt() : x(0) {}
ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
ModInt &operator+=(const ModInt &p) {
if((x += p.x) >= mod) x -= mod;
return *this;
}
ModInt &operator-=(const ModInt &p) {
if((x += mod - p.x) >= mod) x -= mod;
return *this;
}
ModInt &operator*=(const ModInt &p) {
x = (int) (1LL * x * p.x % mod);
return *this;
}
ModInt &operator/=(const ModInt &p) {
*this *= p.inverse();
return *this;
}
ModInt operator-() const { return ModInt(-x); }
friend ModInt operator+(const ModInt& lhs, const ModInt& rhs) {
return ModInt(lhs) += rhs;
}
friend ModInt operator-(const ModInt& lhs, const ModInt& rhs) {
return ModInt(lhs) -= rhs;
}
friend ModInt operator*(const ModInt& lhs, const ModInt& rhs) {
return ModInt(lhs) *= rhs;
}
friend ModInt operator/(const ModInt& lhs, const ModInt& rhs) {
return ModInt(lhs) /= rhs;
}
bool operator==(const ModInt &p) const { return x == p.x; }
bool operator!=(const ModInt &p) const { return x != p.x; }
ModInt inverse() const {
int a = x, b = mod, u = 1, v = 0, t;
while(b > 0) {
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
ModInt pow(int64_t n) const {
ModInt ret(1), mul(x);
while(n > 0) {
if(n & 1) ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
friend ostream &operator<<(ostream &os, const ModInt &p) {
return os << p.x;
}
friend istream &operator>>(istream &is, ModInt &a) {
int64_t t;
is >> t;
a = ModInt< mod >(t);
return (is);
}
static int get_mod() { return mod; }
};
template< typename T >
struct Combination {
vector< T > _fact, _rfact, _inv;
Combination(ll sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) {
_fact[0] = _rfact[sz] = _inv[0] = 1;
for(ll i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i;
_rfact[sz] /= _fact[sz];
for(ll i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1);
for(ll i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1];
}
inline T fact(ll k) const { return _fact[k]; }
inline T rfact(ll k) const { return _rfact[k]; }
inline T inv(ll k) const { return _inv[k]; }
T P(ll n, ll r) const {
if(r < 0 || n < r) return 0;
return fact(n) * rfact(n - r);
}
T C(ll p, ll q) const {
if(q < 0 || p < q) return 0;
return fact(p) * rfact(q) * rfact(p - q);
}
T RC(ll p, ll q) const {
if(q < 0 || p < q) return 0;
return rfact(p) * fact(q) * fact(p - q);
}
T H(ll n, ll r) const {
if(n < 0 || r < 0) return (0);
return r == 0 ? 1 : C(n + r - 1, r);
}
//+1がm個、-1がn個で prefix sumが常にk以上
T catalan(ll m,ll n,ll k){
if(n>m-k)return 0;
else return C(n+m,m)-C(n+m,n+k-1);
}
};
using modint = ModInt< MOD9 >;modint mpow(ll n, ll x){return modint(n).pow(x);}modint mpow(modint n, ll x){return n.pow(x);}
//using modint=ld;modint mpow(ll n, ll x){return pow(n,x);}modint mpow(modint n, ll x){return pow(n,x);}
using Comb=Combination<modint>;
template<typename T>
struct BIT{
ll n;
ll k=1;
vector<T>data;
BIT() = default;
BIT(ll size):n(size){
data.assign(n,0);
while(k*2<=n)k*=2;
}
void add(ll a,T w){
for(ll i=a+1;i<=n;i+=i&-i)data[i-1]+=w;
}
T sum(ll a){//[0,a)
if(a<=0)return 0;
T ret = 0;
for(ll i=a;i>0;i-=i&-i)ret+=data[i-1];
return ret;
}
//[a,b)
T sum(ll a,ll b){return a>=b?0:sum(b)-sum(a);}
T operator[](ll pos){
return sum(pos,pos+1);
}
ll lower_bound(ll x){
ll ret=0;
for(ll i=k;i>0;i/=2){
if(ret+i<=n&&data[ret+i-1]<x){
x-=data[ret+i-1];
ret+=i;
}
}
return ret;
}
ll lower_first(ll x){
return lower_bound(sum(n)-x+1);
}
void print(){
for(ll i=0;i<n;i++){
if(i!=0)cout<<" ";
cout<<(*this)[i];
}
cout<<endl;
}
};
template<typename T>
struct HLD{
using D=long long;
int n;
vector<int>sz;//部分木サイズ
vector<D>dep;
vector<int>par;
vector<int>head;
Graph<T> &g;//隣接リスト
vector<edge<T>>edges;//データ構造に乗せるedge列
vector<int>in,out;//[in,out)で部分木、[ina,inb]でa~bのパス(aが上)
vector<int>comp;//連結成分の根
//inは頂点のindexを表す。また、edge列の下側の頂点である
HLD(Graph<T> &g,int r=-1):g(g),n(g.size()){
hld_build(r);
}
void hld_build(int root = -1){
in.assign(n,-1);out.assign(n,-1);dep.assign(n,0);
par.assign(n,-1);head.assign(n,-1);sz.assign(n,-1);comp.assign(n,-1);
edges.assign(n,edge<T>());
if(root == -1){//根がどこでも良い場合(森でも可)
for(int i=0;i<n;i++){
if(sz[i] == -1){
head[i] = i;
dfs_sz(i, 0, i);
dfs_hld(i);
}
}
}
else{
head[root] = root;
dfs_sz(root, 0, root);
dfs_hld(root);
}
}
void dfs_sz(int k, D d,int r){
sz[k] = 1;
comp[k] = r;
dep[k] = d;
for(auto &e: g[k]){
if(e.to == par[k])continue;
par[e.to] = k;
dfs_sz(e.to, d+e.cost, r);
sz[k] += sz[e.to];
if(g[k][0].to==par[k]||sz[e.to] > sz[g[k][0].to])swap(e, g[k][0]);
}
}
int time = 0;
void dfs_hld(int k){
in[k] = time++;
for(auto e:g[k]){
if(e.to == par[k])continue;
head[e.to] = (e.to == g[k][0].to ? head[k]: e.to);
edges[time] = e;
dfs_hld(e.to);
}
out[k] = time;
}
int lca(int p,int q){
while(1){
if(in[p] < in[q])swap(p,q);
if(head[p] == head[q])return q;
p = par[head[p]];
}
}
vector<pair<int,int>>query_path(int p,int q,bool isEdge){
int r=lca(p,q);
vector<pair<int,int>>ret;
for(int i=0;i<2;i++){
if(i == 1)swap(p,q);
while(1){
if(isEdge&&p==r)break;
if(head[p]==head[r]){
ret.emplace_back(in[r]+(isEdge?1:i),in[p]+1);
break;
}
ret.emplace_back(in[head[p]],in[p]+1);
p = par[head[p]];
}
}
return ret;
}
vector<vector<pair<int,int>>>query_order_path(int p,int q,bool isEdge){
//非可換クエリ用、配列0を順番を反転したデータ構造に、配列1を通常のデータ構造に
vector<vector<pair<int,int>>>ret(2);
int r=lca(p,q);
for(int i=0;i<2;i++){
if(i == 1)swap(p,q);
while(1){
if(isEdge&&p==r)break;
if(head[p]==head[r]){
if(i==0) ret[i].emplace_back(n-(in[p]+1),n-(in[r]+(isEdge?1:i)));
else ret[i].emplace_back(in[r]+(isEdge?1:i),in[p]+1);
break;
}
if(i==0) ret[i].emplace_back(n-(in[p]+1),n-(in[head[p]]));
else ret[i].emplace_back(in[head[p]],in[p]+1);
p = par[head[p]];
}
}
reverse(ret[1].begin(), ret[1].end());
return ret;
}
pair<int,int>query_subtree(int p,bool isEdge){
return make_pair(in[p]+isEdge,out[p]);
}
//uのv方向の子 子孫関係は前もって確認すること(in,outを見る)
int child(int u,int v)const{
while(1){
if(head[u]==head[v]){
v=g[u][0].to;
break;
}
v=head[v];
if(par[v]==u)break;
v=par[v];
}
return v;
}
//uをv方向に一つ進めた頂点
int move(int u,int v)const{
assert(u!=v);
if(in[u]<in[v]&&in[v]<out[u])return child(u,v);
else return par[u];
}
D dist(int u,int v){
return dep[u]+dep[v]-2*dep[lca(u,v)];
}
vector<int>rev_in;
int climb(int u,int k){
if(rev_in.empty()){
rev_in.resize(n);
for(int i=0;i<n;i++)rev_in[in[i]]=i;
}
int nd=max<int>(dep[u]-k, 0);
while(dep[u]>nd){
if(dep[head[u]]>nd){
u=par[head[u]];
}
else{
u=rev_in[in[head[u]]+nd-dep[head[u]]];
}
}
return u;
}
int jump(int from,int to, int k){
int r = lca(from, to);
int d1 = dep[from] - dep[r];
int d2 = dep[to] - dep[r];
if(d1 + d2 < k)return -1;
else if(k <= d1)return climb(from, k);
else return climb(to, d1 + d2 - k);
}
template<typename I>
Graph<T>lca_tree(vector<I>&v){
auto compare=[&](int x,int y){return in[x]<in[y];};
sort(v.begin(),v.end(),compare);
int sz1=v.size();
for(int i=0;i<sz1-1;i++)v.push_back(lca(v[i],v[i+1]));
sort(v.begin(),v.end(),compare);
v.erase(unique(v.begin(),v.end()),v.end());
int sz2=v.size();
Graph<T>ret(sz2);
stack<int>st;
for(int i=0;i<sz2;i++){
while(!st.empty()&&out[v[st.top()]]<=in[v[i]])st.pop();
if(!st.empty()){
ret[st.top()].emplace_back(i,dep[v[i]]-dep[v[st.top()]]);
ret[i].emplace_back(st.top(),dep[v[i]]-dep[v[st.top()]]);
}
st.push(i);
}
return ret;
}
};
template<typename T>
struct BIT2{
ll n;
ll k=1;
vector<T>data;
BIT2() = default;
BIT2(ll size):n(size){
n++;
data.assign(n,0);
while(k*2<=n)k*=2;
}
void add(ll a,T w){
for(ll i=a+1;i<=n;i+=i&-i)data[i-1]+=w;
}
//[l,r)
void add(ll l,ll r,T w){
if(l>=r)return;
add(l,w);add(r,-w);
}
T sum(ll a){//[0,a)
if(a<=0)return 0;
T ret = 0;
for(ll i=a;i>0;i-=i&-i)ret+=data[i-1];
return ret;
}
//[a,b)
T sum(ll a,ll b){return a>=b?0:sum(b)-sum(a);}
T operator[](ll pos){
return sum(0,pos+1);
}
ll lower_bound(ll x){
ll ret=0;
for(ll i=k;i>0;i/=2){
if(ret+i<=n&&data[ret+i-1]<x){
x-=data[ret+i-1];
ret+=i;
}
}
return ret;
}
void print(){
for(ll i=0;i<n-1;i++){
if(i!=0)cout<<" ";
cout<<(*this)[i];
}
cout<<endl;
}
};
template< typename Monoid, typename OperatorMonoid,typename F, typename G, typename H>
struct LazySegmentTree {
ll sz, height, n;
vector< Monoid > data;
vector< OperatorMonoid > lazy;
const F f;
const G g;
const H h;
Monoid M1;
OperatorMonoid OM0;
LazySegmentTree(int n, const F &f,const G &g, const H &h, Monoid M1, OperatorMonoid OM0):n(n),f(f),g(g),h(h),M1(M1),OM0(OM0){
sz = 1;
height = 0;
while(sz < n) sz <<= 1, height++;
data.assign(2 * sz, M1);
lazy.assign(2 * sz, OM0);
}
void set(ll k, const Monoid &x) {
data[k + sz] = x;
}
void build() {
for(ll k = sz - 1; k > 0; k--) {
data[k] = f(data[2 * k + 0], data[2 * k + 1]);
}
}
inline void propagate(int k) {
if(lazy[k] != OM0) {
lazy[2 * k + 0] = h(lazy[2 * k + 0], lazy[k]);
lazy[2 * k + 1] = h(lazy[2 * k + 1], lazy[k]);
data[k] = reflect(k);
lazy[k] = OM0;
}
}
inline Monoid reflect(int k) {
return lazy[k] == OM0 ? data[k] : g(data[k], lazy[k]);
}
inline void recalc(int k) {
while(k >>= 1) data[k] = f(reflect(2 * k + 0), reflect(2 * k + 1));
}
inline void thrust(int k) {
for(ll i = height; i > 0; i--) propagate(k >> i);
}
void update(int a, int b, const OperatorMonoid &x) {
if(a>=b)return;
thrust(a += sz);
thrust(b += sz - 1);
for(ll l = a, r = b + 1; l < r; l >>= 1, r >>= 1) {
if(l & 1) lazy[l] = h(lazy[l], x), ++l;
if(r & 1) --r, lazy[r] = h(lazy[r], x);
}
recalc(a);
recalc(b);
}
void update(int a,const Monoid &x){
thrust(a += sz);
data[a] = x;
lazy[a] = OM0;
recalc(a);
}
Monoid query(int a, int b) {
if(a>=b)return M1;
thrust(a += sz);
thrust(b += sz - 1);
Monoid L = M1, R = M1;
for(ll l = a, r = b + 1; l < r; l >>= 1, r >>= 1) {
if(l & 1) L = f(L, reflect(l++));
if(r & 1) R = f(reflect(--r), R);
}
return f(L, R);
}
Monoid operator[](const int &k) {
return query(k, k + 1);
}
Monoid all_prod(){
return reflect(1);
}
template< typename C >
ll find_subtree(int a, const C &check, Monoid &M, bool type) {
while(a < sz) {
propagate(a);
Monoid nxt = type ? f(reflect(2 * a + type), M) : f(M, reflect(2 * a + type));
if(check(nxt)) a = 2 * a + type;
else M = nxt, a = 2 * a + 1 - type;
}
return a - sz;
}
template< typename C >
ll find_first(int a, const C &check) {
Monoid L = M1;
if(a <= 0) {
if(check(f(L, reflect(1)))) return find_subtree(1, check, L, false);
return n;
}
thrust(a + sz);
ll b = sz;
for(a += sz, b += sz; a < b; a >>= 1, b >>= 1) {
if(a & 1) {
Monoid nxt = f(L, reflect(a));
if(check(nxt)) return find_subtree(a, check, L, false);
L = nxt;
++a;
}
}
return n;
}
template< typename C >
ll find_last(int b, const C &check) {
Monoid R = M1;
if(b >= sz) {
if(check(f(reflect(1), R))) return find_subtree(1, check, R, true);
return -1;
}
thrust(b + sz - 1);
ll a = sz;
for(b += sz; a < b; a >>= 1, b >>= 1) {
if(b & 1) {
Monoid nxt = f(reflect(--b), R);
if(check(nxt)) return find_subtree(b, check, R, true);
R = nxt;
}
}
return -1;
}
void print(){
for(ll i=0;i<n;i++)if((*this)[i]==M1)cout<<"x|";else cout<<(*this)[i]<<"|";
cout<<endl;
}
};
namespace affine_sum{
using M=pair<modint,modint>;
auto f=[](M x,M y)->M{
return {x.fi+y.fi,x.se+y.se};
};
auto g=[](M x,M y)->M{
return {y.fi*x.fi+x.se*y.se,x.se};
};
auto h=[](M x,M y)->M{
return {x.fi*y.fi,y.fi*x.se+y.se};
};
LazySegmentTree<M,M,decltype(f),decltype(g),decltype(h)>make(int n){
return {n,f,g,h,{0,0},{1,0}};
}
}
int main(){
cin.tie(nullptr);
ios_base::sync_with_stdio(false);
ll res=0,buf=0;
bool judge = true;
ll n;cin>>n;
auto g=readGraph<int>(n,n-1);
ll q;cin>>q;
HLD hld(g);
vector<modint>two(n+q+1,1);
rep(i,0,two.size()-1)two[i+1]=two[i]*2;
auto power=affine_sum::make(n);
rep(i,0,n){
power.set(i,{0,1});
}
power.build();
vector<ll>cnt(n);
BIT2<ll>num(n);
modint ret=0;
auto get=[&](ll x,ll y){
//power.print();
modint ret=0;
ll k=hld.lca(x,y);
auto tmp=hld.query_path(x,y,false);
for(auto z:tmp){
ret+=power.query(z.fi,z.se).fi;
}
OUT(x,y,ret);
ret+=two[num[hld.in[k]]];
OUT(x,y,ret);
return ret;
};
auto add=[&](ll x,ll y,ll ch){
if(ch==1){
ret+=get(x,y);
}
ll k=hld.lca(x,y);
cnt[k]+=ch;
power.update(hld.in[k],{(two[cnt[k]]-1)*two[num[hld.in[k]]],1});
auto tmp=hld.query_path(x,y,true);
for(auto z:tmp){
num.add(z.fi,z.se,ch);
power.update(z.fi,z.se,{2,0});
}
//num.add(hld.in[k],-1);
if(ch==-1){
ret-=get(x,y);
}
};
while(q--){
char c;cin>>c;
ll ch=1;if(c=='-')ch=-1;
ll x,y;cin>>x>>y;x--;y--;
add(x,y,ch);
cout<<ret<<endl;
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3644kb
input:
5 1 2 5 1 2 3 4 2 6 + 4 5 + 2 2 + 1 3 - 2 2 + 2 3 + 4 4
output:
1 3 7 3 7 9
result:
ok 6 lines
Test #2:
score: -100
Wrong Answer
time: 1ms
memory: 3740kb
input:
20 8 7 19 10 12 14 3 16 17 13 7 10 5 6 1 9 15 12 5 2 16 13 3 11 20 14 18 6 1 14 16 20 11 10 3 4 20 6 30 + 10 20 + 14 20 + 12 17 - 14 20 - 12 17 + 4 6 + 8 20 + 3 6 - 10 20 + 2 17 + 1 16 + 6 10 + 9 10 + 5 15 + 7 8 - 7 8 + 2 5 + 3 18 + 1 20 + 8 16 - 3 18 - 5 15 + 4 20 + 14 16 - 4 6 + 8 19 + 4 7 - 1 16 ...
output:
1 3 7 998244350 998244333 998244350 1 9 1 9 25 57 121 249 251 249 253 509 1021 1277 253 998243598 757 2293 998242038 998242054 998242134 998232930 998233942 998217110
result:
wrong answer 4th lines differ - expected: '3', found: '998244350'