CF1774F1.Magician and Pigs (Easy Version)

普及/提高-

通过率:0%

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题目描述

This is the easy version of the problem. The only difference between the two versions is the constraint on nn and xx . You can make hacks only if both versions of the problem are solved.

Little09 has been interested in magic for a long time, and it's so lucky that he meets a magician! The magician will perform nn operations, each of them is one of the following three:

  • 1 x1\ x : Create a pig with xx Health Points.
  • 2 x2\ x : Reduce the Health Point of all living pigs by xx .
  • 33 : Repeat all previous operations. Formally, assuming that this is the ii -th operation in the operation sequence, perform the first i1i-1 operations (including "Repeat" operations involved) in turn.

A pig will die when its Health Point is less than or equal to 00 .

Little09 wants to know how many living pigs there are after all the operations. Please, print the answer modulo 998244353998\,244\,353 .

输入格式

The first line contains a single integer nn ( 1n21051\leq n\leq 2\cdot 10^5 ) — the number of operations.

Each of the following nn lines contains an operation given in the form described in the problem statement. It's guaranteed that 1x21051\leq x\leq 2\cdot 10^5 in operations of the first two types.

输出格式

Print a single integer — the number of living pigs after all the operations, modulo 998244353998\,244\,353 .

输入输出样例

  • 输入#1

    4
    1 8
    2 3
    3
    3

    输出#1

    2
  • 输入#2

    6
    1 5
    1 6
    2 2
    3
    1 4
    3

    输出#2

    5
  • 输入#3

    12
    2 1
    1 15
    1 9
    3
    1 12
    2 2
    1 13
    3
    2 1
    1 9
    1 8
    3

    输出#3

    17

说明/提示

In the first example, the operations are equivalent to repeating four times: create a pig with 88 Health Points and then reduce the Health Points of all living pigs by 33 . It is easy to find that there are two living pigs in the end with 22 and 55 Health Points.

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