#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

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

  int n = 10000;
  for (int a = 0; a <= 100; a++) {
    for (int b = 0; b <= 100; b++) {
      if (a + b == 0)
        continue;
      if (int(100.0 * a / (a + b) + 0.5) == A && int(100.0 * b / (a + b) + 0.5) == B)
        n = min(n, a + b);
    }
  }

  cout << n << endl;
  
  return 0;
}