#include <bits/stdc++.h>
using namespace std;
/*#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#endif*/
using ll = long long;
using ld = long double;
using ull = unsigned long long;
#define endl "\n"
typedef pair<int, int> Pii;
#define REP(i, n) for (int i = 0; i < (n); ++i)
#define REP3(i, m, n) for (int i = (m); (i) < int(n); ++ (i))
#define rep(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define ALL(x) begin(x), end(x)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(s) (s).begin(),(s).end()
#define drep2(i, m, n) for (int i = (m)-1; i >= (n); --i)
#define drep(i, n) drep2(i, n, 0)
#define rever(vec) reverse(vec.begin(), vec.end())
#define sor(vec) sort(vec.begin(), vec.end())
#define fi first
#define FOR_(n) for (ll _ = 0; (_) < (ll)(n); ++(_))
#define FOR(i, n) for (ll i = 0; (i) < (ll)(n); ++(i))
#define se second
#define pb push_back
#define P pair<ll,ll>
#define PQminll priority_queue<ll, vector<ll>, greater<ll>>
#define PQmaxll priority_queue<ll,vector<ll>,less<ll>>
#define PQminP priority_queue<P, vector<P>, greater<P>>
#define PQmaxP priority_queue<P,vector<P>,less<P>>
#define NP next_permutation
#define die(a) {cout<<a<<endl;return 0;}
#define dier(a) {return a;}
//const ll mod = 1000000009;
const ll mod = 998244353;
//const ll mod = 1000000007;
const ll inf = 4100000000000000000ll;
const ld eps = ld(0.00000000001);
static const long double pi = 3.141592653589793;
template<class T>void vcin(vector<T> &n){for(int i=0;i<int(n.size());i++) cin>>n[i];}
template<class T,class K>void vcin(vector<T> &n,vector<K> &m){for(int i=0;i<int(n.size());i++) cin>>n[i]>>m[i];}
template<class T>void vcout(vector<T> &n){for(int i=0;i<int(n.size());i++){cout<<n[i]<<" ";}cout<<endl;}
template<class T>void vcin(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cin>>n[i][j];}}}
template<class T>void vcout(vector<vector<T>> &n){for(int i=0;i<int(n.size());i++){for(int j=0;j<int(n[i].size());j++){cout<<n[i][j]<<" ";}cout<<endl;}cout<<endl;}
void yes(bool a){cout<<(a?"yes":"no")<<endl;}
void YES(bool a){cout<<(a?"YES":"NO")<<endl;}
void Yes(bool a){cout<<(a?"Yes":"No")<<endl;}
void possible(bool a){ cout<<(a?"possible":"impossible")<<endl; }
void Possible(bool a){ cout<<(a?"Possible":"Impossible")<<endl; }
void POSSIBLE(bool a){ cout<<(a?"POSSIBLE":"IMPOSSIBLE")<<endl; }
#define FOR_R(i, n) for (ll i = (ll)(n)-1; (i) >= 0; --(i))
template<class T>auto min(const T& a){ return *min_element(all(a)); }
template<class T>auto max(const T& a){ return *max_element(all(a)); }
template<class T,class F>void print(pair<T,F> a){cout<<a.fi<<" "<<a.se<<endl;}
template<class T>bool chmax(T &a,const T b) { if (a<b) { a=b; return 1; } return 0;}
template<class T>bool chmin(T &a,const T b) { if (b<a) { a=b; return 1; } return 0;}
template<class T> void ifmin(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}}
template<class T> void ifmax(T t,T u){if(t>u){cout<<-1<<endl;}else{cout<<t<<endl;}}
ll fastgcd(ll u,ll v){ll shl=0;while(u&&v&&u!=v){bool eu=!(u&1);bool ev=!(v&1);if(eu&&ev){++shl;u>>=1;v>>=1;}else if(eu&&!ev){u>>=1;}else if(!eu&&ev){v>>=1;}else if(u>=v){u=(u-v)>>1;}else{ll tmp=u;u=(v-u)>>1;v=tmp;}}return !u?v<<shl:u<<shl;}
ll modPow(ll a, ll n, ll mod) { if(mod==1) return 0;ll ret = 1; ll p = a % mod; while (n) { if (n & 1) ret = ret * p % mod; p = p * p % mod; n >>= 1; } return ret; }
vector<ll> divisor(ll x){ vector<ll> ans; for(ll i = 1; i * i <= x; i++){ if(x % i == 0) {ans.push_back(i); if(i*i!=x){ ans.push_back(x / ans[i]);}}}sor(ans); return ans; }
ll pop(ll x){return __builtin_popcountll(x);}
ll poplong(ll x){ll y=-1;while(x){x/=2;y++;}return y;}
P hyou(P a){ll x=fastgcd(abs(a.fi),abs(a.se));a.fi/=x;a.se/=x;if(a.se<0){a.fi*=-1;a.se*=-1;}return a;}
P Pplus(P a,P b){ return hyou({a.fi*b.se+b.fi*a.se,a.se*b.se});}
P Ptimes(P a,ll b){ return hyou({a.fi*b,a.se});}
P Ptimes(P a,P b){ return hyou({a.fi*b.fi,a.se*b.se});}
P Pminus(P a,P b){ return hyou({a.fi*b.se-b.fi*a.se,a.se*b.se});}
P Pgyaku(P a){ return hyou({a.se,a.fi});}
void cincout(){
ios::sync_with_stdio(false);
std::cin.tie(nullptr);
cout<< fixed << setprecision(15);
}
struct segtree{
vector<ll> node;
ll n;
segtree(){
}
segtree(ll _n){
n=1;
while(n<_n) n*=2;
node.resize(2*n);
}
void set(ll i,ll v){
i+=n;
node[i]=v;
while(i){
i/=2;
node[i]=node[2*i]+node[2*i+1];
}
}
ll prod(ll l,ll r,ll a,ll b,ll k){
if(r<=a||b<=l) return 0;
if(l<=a&&b<=r) return node[k];
return prod(l,r,a,(a+b)/2,2*k)+prod(l,r,(a+b)/2,b,2*k+1);
}
ll prod(ll l,ll r){
return prod(l,r,0,n,1);
}
};
struct HLD{
vector<vector<ll>> g;
vector<ll> p,nx,sz,in;
ll now=0;
segtree seg;
HLD(vector<vector<ll>> _g,ll r){
ll n=_g.size();
g=_g;
p.resize(n);
nx.resize(n);
sz.resize(n);
in.resize(n);
dfs_sz(r,-1);
now=0;
dfs_hld(r,-1);
seg=segtree(n);
}
void dfs_sz(int a,int b){
if(g[a].size()&&g[a][0]==b){
swap(g[a][0],g[a].back());
}
for(auto &e:g[a]){
if(e==b) continue;
dfs_sz(e,a);
p[e]=a;
sz[a]+=sz[e];
if(sz[e]>sz[g[a][0]]){
swap(e,g[a][0]);
}
}
sz[a]++;
}
void dfs_hld(int a,int b){
in[a]=now;
now++;
for(auto &e:g[a]){
if(e==b) continue;
if(e==g[a][0]){
nx[e]=nx[a];
}
else{
nx[e]=e;
}
dfs_hld(e,a);
}
}
ll lca(ll u,ll v){
while(true){
if(in[u]>in[v]) swap(u,v);
if(nx[u]==nx[v]) return u;
v=p[nx[v]];
}
}
void set(ll i,ll x){
seg.set(in[i],x);
}
ll prod(ll u,ll v){
ll l=lca(u,v);
ll ans=0;
while(nx[u]!=nx[l]){
ans+=seg.prod(in[nx[u]],in[u]+1);
u=p[nx[u]];
}
while(nx[v]!=nx[l]){
ans+=seg.prod(in[nx[v]],in[v]+1);
v=p[nx[v]];
}
ans+=seg.prod(in[l],in[u]+1);
ans+=seg.prod(in[l]+1,in[v]+1);
return ans;
}
};
vector<vector<ll>> g1,g2;
ll re;
vector<ll> v;
void dfs(ll a,ll b){
if(re==0) return;
v.pb(a);
re--;
if(re==0) return;
for(auto e:g1[a]){
if(e==b) continue;
dfs(e,a);
if(re==0) return;
}
}
ll d1[101010][2],d2[101010][2];
vector<P> ask;
ll th[1010101];
ll now=0;
P dfs2(ll a,ll b){
vector<P> d;
for(auto e:g2[a]){
if(e==b) continue;
P v=dfs2(e,a);
if(v.fi==-1) continue;
d.pb(v);
}
if(th[a]&&d.size()){
ask.pb({a,d[0].fi});
}
for(int i=0;i+1<d.size();i++){
ask.pb({d[i].fi,d[i+1].fi});
}
if(th[a]) return {a,0};
else if(d.size()) return d[0];
else return {-1,-1};
}
ll ud1[1010101],ud2[1010101];
P dfs3(ll a,ll b){
vector<P> d;
vector<ll> es;
for(auto e:g2[a]){
if(e==b) continue;
P v=dfs3(e,a);
if(v.fi==-1) continue;
d.pb(v);
es.pb(e);
}
if(th[a]&&d.size()){
//ask.pb({a,d[0].fi});
ud2[es[0]]=d2[now][1]-d[0].se;
now++;
}
for(int i=0;i+1<d.size();i++){
// ask.pb({d[i].fi,d[i+1].fi});
ud2[es[i]]=d2[now][0]-d[i].se;
ud2[es[i+1]]=d2[now][1]-d[i+1].se;
now++;
}
if(th[a]) return {a,0};
else if(d.size()) return {d[0].fi,d[0].se+ud2[es[0]]};
else return {-1,-1};
}
vector<P> g3[1010101];
ll al=-1;
ll rt[1010101];
vector<ll> ok;
void dfs4(ll a,ll b,HLD &hld){
if(al==-1){
ok.pb(a);
al=a;
}
for(auto e:g3[a]){
ll c=e.fi,i=e.se;
if(c==b) continue;
if(hld.lca(al,hld.lca(c,a))==al){
if(ask[i].fi==c) rt[c]=rt[a]+d1[i][0]-d1[i][1];
else rt[c]=rt[a]-d1[i][0]+d1[i][1];
}
else{
al=hld.lca(c,a);
ll pl=-rt[a];
if(ask[i].fi==a) pl+=d1[i][0];
else pl+=d1[i][1];
for(auto e:ok) rt[e]+=pl;
if(ask[i].fi==c) rt[c]=d1[i][0];
else rt[c]=d1[i][1];
}
ok.pb(c);
dfs4(c,a,hld);
}
}
int main(){
//cincout();
ll n,k,q,t;
cin>>n>>k>>q>>t;
ll r1,r2;
vector<ll> p1(n),p2(n);
vcin(p1);
vcin(p2);
g1.resize(n);
g2.resize(n);
for(auto &e:p1){
if(e!=-1) e--;
}
for(auto &e:p2){
if(e!=-1) e--;
}
for(int i=0;i<n;i++){
if(p1[i]==-1) r1=i;
else{
g1[p1[i]].pb(i);
g1[i].pb(p1[i]);
}
if(p2[i]==-1) r2=i;
else{
g2[p2[i]].pb(i);
g2[i].pb(p2[i]);
}
}
HLD hld1(g1,r1),hld2(g2,r2);
re=k;
dfs(r1,-1);
for(auto e:v) cout<<e+1<<" ";
cout<<endl;
cout.flush();
return 0;
for(auto e:v) th[e]++;
dfs2(r2,-1);
for(int i=0;i<ask.size();i++){
g3[ask[i].fi].pb({ask[i].se,i});
g3[ask[i].se].pb({ask[i].fi,i});
cout<<"?"<<" "<<ask[i].fi+1<<" "<<ask[i].se+1<<endl;
cout.flush();
}
cout<<"!"<<endl;
cout.flush();
for(int i=0;i<k-1;i++) cin>>d1[i][0]>>d1[i][1]>>d2[i][0]>>d2[i][1];
now=0;
dfs3(r2,-1);
for(int i=0;i<n;i++){
if(g3[i].size()){
dfs4(i,-1,hld1);
break;
}
}
for(int i=0;i<n;i++){
if(th[i]&&i!=r1) ud1[i]=rt[i]-rt[p1[i]];
}
/*
for(int i=0;i<n;i++) cout<<ud1[i]<<" ";
cout<<endl;
for(int i=0;i<n;i++) cout<<rt[i]<<" ";
cout<<endl;
for(int i=0;i<n;i++) cout<<ud2[i]<<" ";
cout<<endl;
*/
for(int i=0;i<n;i++){
hld1.set(i,ud1[i]);
hld2.set(i,ud2[i]);
}
for(int i=0;i<t;i++){
ll a,b;
cin>>a>>b;
a--;
b--;
cout<<hld1.prod(a,b)-ud1[hld1.lca(a,b)]<<" "<<hld2.prod(a,b)-ud2[hld2.lca(a,b)]<<endl;
cout.flush();
}
return 0;
}
Compilation message
Main.cpp: In function 'std::pair<long long int, long long int> dfs2(ll, ll)':
Main.cpp:206:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
206 | for(int i=0;i+1<d.size();i++){
| ~~~^~~~~~~~~
Main.cpp: In function 'std::pair<long long int, long long int> dfs3(ll, ll)':
Main.cpp:229:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
229 | for(int i=0;i+1<d.size();i++){
| ~~~^~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:305:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
305 | for(int i=0;i<ask.size();i++){
| ~^~~~~~~~~~~
Main.cpp:298:6: warning: 'r1' may be used uninitialized in this function [-Wmaybe-uninitialized]
298 | dfs(r1,-1);
| ~~~^~~~~~~
Main.cpp:296:29: warning: 'r2' may be used uninitialized in this function [-Wmaybe-uninitialized]
296 | HLD hld1(g1,r1),hld2(g2,r2);
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
969 ms |
239224 KB |
Unexpected end of file - token expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1064 ms |
239400 KB |
Unexpected end of file - token expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1018 ms |
239220 KB |
Unexpected end of file - token expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2343 ms |
454100 KB |
Unexpected end of file - token expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2450 ms |
454104 KB |
Unexpected end of file - token expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
