#include<stdio.h>
#include<math.h>
#define EPS 1e-8

FILE *out, *sol, *score;

	int main()
	{
		out = fopen ("klizanje.out", "r");
		sol = fopen ("klizanje.sol", "r");
		score = fopen ("score.tmp", "w");

		double n, m;
		fscanf (out, "%lf", &n);
		fscanf (sol, "%lf", &m);
		if ((abs (n) < EPS) && (abs (m) < EPS))
			fprintf (score, "10\n");
		else
		{
			double tmp = 2 * abs(n - m) / (abs(n) + abs(m));
			fprintf (score, "%d\n", (abs(tmp) < EPS) ? 10 : 0);
		}

		fclose(out);
		fclose(sol);
		fclose(score);

		return 0;
	}