#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(n);++i)
#define trace(var) cerr<<">>> "<<#var<<" = "<<var<<endl;
using Integer = unsigned long long;

template<class S, class T> inline
ostream& operator<<(ostream&os, pair<S,T> p) {
  return os << '(' << p.first << ", " << p.second << ')';
}

template<typename Nat=int>
pair<Nat, Nat> n2nn(Nat a) {
  int i = 0;
  while (a > i) {
    ++i; 
    a -= i;
  }
  return make_pair(a, i-a);
}

int rat(int a, int b) {
  double r = 100.0 * a / (a+b);
  return int(round(r));
}

int main() {

  int ans = 1e9;
  int A, B; cin >> A >> B;
  int a, b;
  rep (i, 10000) {
    if (i == 0) continue;
    tie(a,b) = n2nn(i);
    if (rat(a,b) != A) continue;
    if (rat(b,a) != B) continue;
    ans = min(ans, a+b);
  }
  cout << ans << endl;

  return 0;
}