typedef pair<int,int>PII
时间: 2023-12-17 11:02:30 浏览: 25
As an AI language model, I can explain to you what the above code does.
The code is written in C++ language, and it defines a new data type called PII using the typedef keyword. PII is an abbreviation for Pair of Integer and Integer, and it is defined as a pair of two integers.
The pair data structure is a built-in container in C++, which has two data members: first and second. The first member holds the first element of the pair, and the second member holds the second element of the pair.
Thus, the PII data type is a pair of two integers, where the first element is an integer and the second element is also an integer. The PII data type can be used to store a pair of integers, such as (3, 5), (7, 2), etc.
This data type can be used in various algorithms and data structures, such as graphs, queues, and stacks, where it is often useful to store pairs of integers.