How to take input

#1

question-https://www.interviewbit.com/problems/matrix-search/

in this line --vector<vector > &A
how to input a 2D array, please tell how to take input the value of the 2D array.

#2

image
image1094×577 35.3 KB

#3

u do not have to take i/p
u just have to use it and make the manipulation