#include<stdio.h>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <algorithm>
#include <sstream>
#include <iostream>
#include <string>

using namespace std;

int main() {

	int A, B;
	cin >> A >> B;

	double i = 1, j = 1;
	int m = 205;


	while(1){
		if (i == 101) break;
		while(1) {
			if (j == 101) break;
			if ((int)(i * 100 /(i + j)  + 0.5)== A && (int)(j * 100 /(i + j)+ 0.5) == B) {
				m = min((int)(i+j), m);
				break;
			}
			j++;
		}
		i++;
		j = 1;
	}

	cout << m << endl;

	return 0;
}