#include <iostream>
using namespace std;

int main(){
   int A,B;
   cin >> A >> B;
   for(int a = 0;;a++){
      for(int b = 0;b <= 200;b++){
         if(a + b == 0) continue;
         if(A == int((100.0 * a) / (a + b) + 0.5) && B == int((100.0 * b) / (a + b) + 0.5)){
            cout << a + b << endl;
            return 0;
         }
      }
   }
}