C++ :

#include<iostream>
#include<vector>
using namespace std;
int main()
{
	int a, b;
	cin >> a >> b;
	vector<int>studentnumber(0);
	vector<int>studentsource(0);
	for (int i = 0; i < a + b; i++)
	{
		int current;
		cin >> current;
		studentnumber.push_back(current);
		cin >> current;
		studentsource.push_back(current);
	}
	for (int i = 0; i < studentnumber.size();i++)
	for (int j = studentnumber.size() - 1; j>0;j--)
	if (studentnumber[j] < studentnumber[j - 1])
	{
		int current = studentnumber[j];
		studentnumber[j] = studentnumber[j - 1];
		studentnumber[j - 1] = current;
		current = studentsource[j];
		studentsource[j] = studentsource[j - 1];
		studentsource[j - 1] = current;
	}
	for (int i = 0; i < studentnumber.size(); i++)
		cout << studentnumber[i] << " " << studentsource[i] << endl;
	return 0;
}