// ConsoleApplication1.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
    unsigned T,i,a,b,r;
	ifstream f("euclid2.in");
	ofstream g("euclid2.out");
	f >> T;
	for (i = 1; i <= T; i++)
	{
		f >> a >> b;
		while (b!=0)
			{
			    r=a%b;
			    a=b;
			    b=r;
			}
		g << a << endl;
	}

}

// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu

// Tips for Getting Started:
//   1. Use the Solution Explorer window to add/manage files
//   2. Use the Team Explorer window to connect to source control
//   3. Use the Output window to see build output and other messages
//   4. Use the Error List window to view errors
//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file