#include <iostream>
#include <cmath>

using namespace std;


int main()
{
	int a, b;

	while(cin >> a >> b)
	{
		if(a == -1)
			break;

		int a_first = a - b;

		if(a_first < 0)
			a_first += 100;

		int b_first = b - a;

		if(b_first < 0)
			b_first += 100;

		cout << min(a_first, b_first) << endl;

	}
	
	return 0;
}