#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <iostream>
#include <limits>


int compute_min_sum(int a0, int b0, int max_cand = 500) {
	auto answer = std::numeric_limits<int>::max();
	for (auto a = 0; a < max_cand; a++)
	{
		for (auto b = 0; b < max_cand; b++)
		{
			if (a == 0 && b == 0) {
				continue;
			}
			auto s = a + b;
			auto cond_a = a0 == std::round(100 * (double)a / s);
			auto cond_b = b0 == std::round(100 * (double)b / s);
			if (cond_a && cond_b) {
				answer = std::min(answer, s);
			}
		}
	}
	return answer;
}


int main() {
	int a0, b0;
	std::cin >> a0 >> b0;
	std::cout << compute_min_sum(a0, b0) << std::endl;
	return EXIT_SUCCESS;
}