This documentation is automatically generated by online-judge-tools/verification-helper
#include "src/datastructure/Develop/RBSTree.hpp"
struct NTree {
using D = ll;
struct Node;
using NP = Node*;
static Node last_d;
static NP last;
struct Node {
NP l, r;
int sz;
D v;
Node(D v) :l(last), r(last), sz(1), v(v) {}
Node() :l(nullptr), r(nullptr), sz(0) {} //last用
void push() {
assert(this != last);
}
NP update() {
assert(this != last);
sz = 1+l->sz+r->sz;
return this;
}
D get(int a) {
assert(0 <= a && a < sz);
push();
if (a < l->sz) {
return l->get(a);
} else if (a == l->sz) {
return v;
} else {
return r->get(a- (l->sz+1));
}
}
} *n;
static NP built(int sz, D d[]) {
if (!sz) return last;
int md = sz/2;
NP x = new Node(d[md]);
x->l = built(md, d);
x->r = built(sz-(md+1), d+(md+1));
return x->update();
}
static uint xor128(){
static uint x=123456789,y=362436069,z=521288629,w=88675123;
uint t;
t=(x^(x<<11));x=y;y=z;z=w; return( w=(w^(w>>19))^(t^(t>>8)) );
}
static NP merge(NP l, NP r) {
if (!l->sz) return r;
if (!r->sz) return l;
l->push(); r->push();
if ((int)(xor128() % (l->sz + r->sz)) < l->sz) {
l->r = merge(l->r, r);
return l->update();
} else {
r->l = merge(l, r->l);
return r->update();
}
}
static pair<NP, NP> split(NP x, int k) {
if (!x->sz) return {last, last};
x->push();
if (k <= x->l->sz) {
auto y = split(x->l, k);
x->l = y.second;
y.second = x->update();
return y;
} else {
auto y = split(x->r, k- x->l->sz -1);
x->r = y.first;
y.first = x->update();
return y;
}
}
NTree() : n(last) {}
NTree(NP n) : n(n) {}
NTree(D d) : n(new Node(d)) {}
NTree(int sz, D d[]) {
n = built(sz, d);
}
int sz() {
return n->sz;
}
void merge(NTree r) {
n = merge(n, r.n);
}
NTree split(int k) {
auto u = split(n, k);
n = u.first;
return NTree(u.second);
}
void insert(int k, D x) {
auto u = split(n, k);
n = merge(merge(u.first, new Node(x)), u.second);
}
void erase(int k) {
auto u = split(n, k);
n = merge(u.first, split(u.second, 1).second);
}
D get(int l) {
return n->get(l);
}
};
NTree::Node NTree::last_d = NTree::Node();
NTree::NP NTree::last = &last_d;
#line 1 "src/datastructure/Develop/RBSTree.hpp"
struct NTree {
using D = ll;
struct Node;
using NP = Node*;
static Node last_d;
static NP last;
struct Node {
NP l, r;
int sz;
D v;
Node(D v) :l(last), r(last), sz(1), v(v) {}
Node() :l(nullptr), r(nullptr), sz(0) {} //last用
void push() {
assert(this != last);
}
NP update() {
assert(this != last);
sz = 1+l->sz+r->sz;
return this;
}
D get(int a) {
assert(0 <= a && a < sz);
push();
if (a < l->sz) {
return l->get(a);
} else if (a == l->sz) {
return v;
} else {
return r->get(a- (l->sz+1));
}
}
} *n;
static NP built(int sz, D d[]) {
if (!sz) return last;
int md = sz/2;
NP x = new Node(d[md]);
x->l = built(md, d);
x->r = built(sz-(md+1), d+(md+1));
return x->update();
}
static uint xor128(){
static uint x=123456789,y=362436069,z=521288629,w=88675123;
uint t;
t=(x^(x<<11));x=y;y=z;z=w; return( w=(w^(w>>19))^(t^(t>>8)) );
}
static NP merge(NP l, NP r) {
if (!l->sz) return r;
if (!r->sz) return l;
l->push(); r->push();
if ((int)(xor128() % (l->sz + r->sz)) < l->sz) {
l->r = merge(l->r, r);
return l->update();
} else {
r->l = merge(l, r->l);
return r->update();
}
}
static pair<NP, NP> split(NP x, int k) {
if (!x->sz) return {last, last};
x->push();
if (k <= x->l->sz) {
auto y = split(x->l, k);
x->l = y.second;
y.second = x->update();
return y;
} else {
auto y = split(x->r, k- x->l->sz -1);
x->r = y.first;
y.first = x->update();
return y;
}
}
NTree() : n(last) {}
NTree(NP n) : n(n) {}
NTree(D d) : n(new Node(d)) {}
NTree(int sz, D d[]) {
n = built(sz, d);
}
int sz() {
return n->sz;
}
void merge(NTree r) {
n = merge(n, r.n);
}
NTree split(int k) {
auto u = split(n, k);
n = u.first;
return NTree(u.second);
}
void insert(int k, D x) {
auto u = split(n, k);
n = merge(merge(u.first, new Node(x)), u.second);
}
void erase(int k) {
auto u = split(n, k);
n = merge(u.first, split(u.second, 1).second);
}
D get(int l) {
return n->get(l);
}
};
NTree::Node NTree::last_d = NTree::Node();
NTree::NP NTree::last = &last_d;