#include <iostream>
#include <cmath>
using namespace std;

int main(){
  	int A, B;
  	cin >> A >> B;
  	for(int sum = 1; sum < 1000; sum++){
    	for(int a = 0; a <= sum; a++){
        	if(round(a / double(sum) * 100) == A && round(100 - a / double(sum) * 100) == B){
            	cout << sum << endl;
              	return 0;
            }
        }
    }
}