index.md

layout
default

Data Structure

• Fenwick Tree

void upd(int idx,int v){
	for(;idx<=N;idx+=idx&=idx)
		tree[idx]+=v;
}
LL read(int idx,LL sum=0){
	for(;idx;idx-=idx&-idx)
		sum+=tree[idx];
	return sum;
}

• Segment Tree

void upd_point(int l,int r,int now,int idx,int v){
	if(l == r){
		tree[now]+=v;
		return ;
	}
	int mid = (l+r)/2;
	if(idx<=mid)	upd_point(l,mid,now*2,idx,v);
	else		upd_point(mid+1,r,now*2+1,idx,v);
	tree[now]+=tree[now*2] + tree[now*2+1];
}
LL read_point(int l,int r,int now,int idx){
	if(l == r)	return tree[now];
	int mid = (l+r)/2;
	if(idx<=mid)	return read_point(l,mid,now*2,idx);
	else		return read_point(mid+1,r,now*2+1,idx);
}

Text can be bold, italic, or strikethrough.

Link to another page.

There should be whitespace between paragraphs.

There should be whitespace between paragraphs. We recommend including a README, or a file with information about your project.

Header 1

This is a normal paragraph following a header. GitHub is a code hosting platform for version control and collaboration. It lets you and others work together on projects from anywhere.

Header 2

This is a blockquote following a header.

When something is important enough, you do it even if the odds are not in your favor.

Header 3

// Javascript code with syntax highlighting.
var fun = function lang(l) {
  dateformat.i18n = require('./lang/' + l)
  return true;
}

Header 4

• This is an unordered list following a header.
• This is an unordered list following a header.
• This is an unordered list following a header.

Header 5

1. This is an ordered list following a header.
2. This is an ordered list following a header.
3. This is an ordered list following a header.

Header 6

head1	head two	three
ok	good swedish fish	nice
out of stock	good and plenty	nice
ok	good oreos	hmm
ok	good zoute drop	yumm

There's a horizontal rule below this.

---

Here is an unordered list:

• Item foo
• Item bar
• Item baz
• Item zip

And an ordered list:

1. Item one
2. Item two
3. Item three
4. Item four

And a nested list:

• level 1 item
  • level 2 item
  • level 2 item
    • level 3 item
    • level 3 item
• level 1 item
  • level 2 item
  • level 2 item
  • level 2 item
• level 1 item
  • level 2 item
  • level 2 item
• level 1 item

Small image

Large image

Definition lists can be used with HTML syntax.

Name

Godzilla

Born

1952

Birthplace

Japan

Color

Green

Long, single-line code blocks should not wrap. They should horizontally scroll if they are too long. This line should be long enough to demonstrate this.

The final element.