#include <iostream>
#include <vector>
using namespace std;
int main() {
int rows, cols, temp;
vector<vector<int>> matrix;
cout << "Enter the row number:" << endl;
cin >> rows;
for (int i = 0; i < rows; i++){
vector<int> v;
cout << "Enter the column no.of array " << i << endl;
cin >> cols;
cout << "The elements in the array:" << endl;
for (int j = 0; j < cols; j++){
cin >> temp;
v.push_back(temp);
}
matrix.push_back(v);
}
cout << endl;
for( auto i: matrix){
for(int j: i)
cout << j << " ";
cout << endl;
}
}