This documentation is automatically generated by online-judge-tools/verification-helper
#include "structure/others/abstract-binary-indexed-tree.hpp"
/**
* @brief Abstract Binary Indexed Tree(抽象化BIT)
*/
template< typename T, typename F >
struct AbstractBinaryIndexedTree {
private:
int n;
vector< T > data;
const F f;
const T e;
public:
AbstractBinaryIndexedTree() = default;
explicit AbstractBinaryIndexedTree(int n, const F f, const T &e) : n(n), f(f), e(e) {
data.assign(n + 1, e);
}
explicit AbstractBinaryIndexedTree(const vector< T > &v, const F f, const T &e) :
AbstractBinaryIndexedTree((int) v.size(), f, e) {
build(v);
}
void build(const vector< T > &v) {
assert(n == (int) v.size());
for(int i = 1; i <= n; i++) data[i] = v[i - 1];
for(int i = 1; i <= n; i++) {
int j = i + (i & -i);
if(j <= n) data[j] = f(data[j], data[i]);
}
}
void apply(int k, const T &x) {
for(++k; k <= n; k += k & -k) data[k] = f(data[k], x);
}
T prod(int r) const {
T ret{e};
for(; r > 0; r -= r & -r) ret = f(ret, data[r]);
return ret;
}
};
template< typename T, typename F >
AbstractBinaryIndexedTree< T, F > get_abstract_binary_indexed_tree(int n, const F &f, const T &e) {
return AbstractBinaryIndexedTree{n, f, e};
}
template< typename T, typename F >
AbstractBinaryIndexedTree< T, F > get_abstract_binary_indexed_tree(const vector< T > &v, const F &f, const T &e) {
return AbstractBinaryIndexedTree{v, f, e};
}
#line 1 "structure/others/abstract-binary-indexed-tree.hpp"
/**
* @brief Abstract Binary Indexed Tree(抽象化BIT)
*/
template< typename T, typename F >
struct AbstractBinaryIndexedTree {
private:
int n;
vector< T > data;
const F f;
const T e;
public:
AbstractBinaryIndexedTree() = default;
explicit AbstractBinaryIndexedTree(int n, const F f, const T &e) : n(n), f(f), e(e) {
data.assign(n + 1, e);
}
explicit AbstractBinaryIndexedTree(const vector< T > &v, const F f, const T &e) :
AbstractBinaryIndexedTree((int) v.size(), f, e) {
build(v);
}
void build(const vector< T > &v) {
assert(n == (int) v.size());
for(int i = 1; i <= n; i++) data[i] = v[i - 1];
for(int i = 1; i <= n; i++) {
int j = i + (i & -i);
if(j <= n) data[j] = f(data[j], data[i]);
}
}
void apply(int k, const T &x) {
for(++k; k <= n; k += k & -k) data[k] = f(data[k], x);
}
T prod(int r) const {
T ret{e};
for(; r > 0; r -= r & -r) ret = f(ret, data[r]);
return ret;
}
};
template< typename T, typename F >
AbstractBinaryIndexedTree< T, F > get_abstract_binary_indexed_tree(int n, const F &f, const T &e) {
return AbstractBinaryIndexedTree{n, f, e};
}
template< typename T, typename F >
AbstractBinaryIndexedTree< T, F > get_abstract_binary_indexed_tree(const vector< T > &v, const F &f, const T &e) {
return AbstractBinaryIndexedTree{v, f, e};
}