题目描述
Problem Description
Score: $ 1000 $ points
PAKEN, a new member of the programming club, received a sequence $P = \{ P_1, P_2, P_3, ..., P_N \}$ of length $ N $ from E869120. Initially, all elements of $ P $ are $ 0 $.
PAKEN wants to make the sequence $ P $ identical to the sequence $A = \{ A_1, A_2, A_3, ..., A_N \}$ by performing the following operations in any order, up to a total of $ 550,000 $ times.
- Operation 1: Choose an integer $ x $ between $ 1 $ and $ N $, and change $ P_x $ to $ 1 $.
- Operation 2: Choose integers $ y $ and $ z $ between $ 1 $ and $ N $, and add the value of $ P_z $ to $ P_y $. Note that $ y = z $ is allowed. Also, the value of $ P_y $ must not exceed $ 10^{18} $.
Since PAKEN is still young, he doesn't know what sequence of operations to perform. To help him, you must show an example of the sequence of operations.
Input Format
The input is given from the standard input in the following format:
$ N $ $ A_1 $ $ A_2 $ $ A_3 $ ... $ A_N $
Output Format
The output should be given from the standard output in the following format:
$ Q $ ($ information of the 1st operation $) ($ information of the 2nd operation $) ($ information of the 3rd operation $) ... ($ information of the Qth operation $)
First, you must output the number of operations $ Q $. $ Q $ must be an integer between $ 0 $ and $ 550,000 $. The next $ Q $ lines should contain the information of each operation as follows:
(☆) For Operation 1
$ 1 $ $ x $
This means to change $ P_x $ to $ 1 $.
(★) For Operation 2
$ 2 $ $ y $ $ z $
This means to add the value of $ P_z $ to $ P_y $.
Sample Input and Output
Sample Input #1
2
1 4
Sample Output #1
4
1 1
1 2
2 2 2
2 2 2
Sample Input #2
3
1 3 5
Sample Output #2
8
1 1
2 1 1
2 3 1
1 1
2 1 2
2 2 1
2 3 1
1 1
Notes/Hints
Constraints
- $ N $ is an integer between $ 2 $ and $ 200,000 $.
- $ A_1 = 1 $.
- $ A_i $ ($1 \leq i \leq N$) is an integer between $ 1 $ and $ 2^{30} - 1 $.
Subtasks
Subtask 1 \[ $ 60 $ points \]
- $ N = 2 $.
Subtask 2 \[ $ 140 $ points \]
- $N \leq 8,000$.
Subtask 3 \[ $ 80 $ points \]
- $N \leq 16,000$.
Subtask 4 \[ $ 230 $ points \]
- $N \leq 25,000$.
Subtask 5 \[ $ 270 $ points \]
- $N \leq 160,000$.
Subtask 6 \[ $ 220 $ points \]
No additional constraints.
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分