Codeforces Round 791 (Div. 2)
C
Rooks Defenders
Codeforces
1400
原题
← BD →
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You have a square chessboard of size $n \times n$. Rows are numbered from top to bottom with numbers from $1$ to $n$, and columns — from left to right with numbers from $1$ to $n$. So, each cell is denoted with pair of integers $(x, y)$ ($1 \le x, y \le n$), where $x$ is a row number and $y$ is a column number.

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You have to perform $q$ queries of three types:

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  • Put a new rook in cell $(x, y)$.
  • Remove a rook from cell $(x, y)$. It's guaranteed that the rook was put in this cell before.
  • Check if each cell of subrectangle $(x_1, y_1) - (x_2, y_2)$ of the board is attacked by at least one rook.
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Subrectangle is a set of cells $(x, y)$ such that for each cell two conditions are satisfied: $x_1 \le x \le x_2$ and $y_1 \le y \le y_2$.

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Recall that cell $(a, b)$ is attacked by a rook placed in cell $(c, d)$ if either $a = c$ or $b = d$. In particular, the cell containing a rook is attacked by this rook.

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Input

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The first line contains two integers $n$ and $q$ ($1 \le n \le 10^5$, $1 \le q \le 2 \cdot 10^5$) — the size of the chessboard and the number of queries, respectively.

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Each of the following $q$ lines contains description of a query. Description begins with integer $t$ ($t \in \{1, 2, 3\}$) which denotes type of a query:

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  • If $t = 1$, two integers $x$ and $y$ follows ($1 \le x, y \le n$) — coordinated of the cell where the new rook should be put in. It's guaranteed that there is no rook in the cell $(x, y)$ at the moment of the given query.
  • If $t = 2$, two integers $x$ and $y$ follows ($1 \le x, y \le n$) — coordinates of the cell to remove a rook from. It's guaranteed that there is a rook in the cell $(x, y)$ at the moment of the given query.
  • If $t = 3$, four integers $x_1, y_1, x_2$ and $y_2$ follows ($1 \le x_1 \le x_2 \le n$, $1 \le y_1 \le y_2 \le n$) — subrectangle to check if each cell of it is attacked by at least one rook.
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It's guaranteed that among $q$ queries there is at least one query of the third type.

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Output

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Print the answer for each query of the third type in a separate line. Print "Yes" (without quotes) if each cell of the subrectangle is attacked by at least one rook.

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Otherwise print "No" (without quotes).

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Note

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Consider example. After the first two queries the board will look like the following picture (the letter $R$ denotes cells in which rooks are located, the subrectangle of the query of the third type is highlighted in green):

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image

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Chessboard after performing the third and the fourth queries:

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image

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Chessboard after performing the fifth and the sixth queries:

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image

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Chessboard after performing the seventh and the eighth queries:

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image

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Chessboard after performing the last two queries:

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image

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样例

Input #1
8 10
1 2 4
3 6 2 7 2
1 3 2
3 6 2 7 2
1 4 3
3 2 6 4 8
2 4 3
3 2 6 4 8
1 4 8
3 2 6 4 8
Output #1
No
Yes
Yes
No
Yes
InputCopy OutputCopy
题目信息
题号
1679C
时间限制
1 s
内存限制
256 MB
标签
数据结构
模拟

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。