#include <bits/stdc++.h>
using namespace std;
int main(){
  int x, y;	cin >> x >> y;
  int high = max(x, y);
  int low = min(x, y);
  if(high - low < 3)	cout << "Yes";
  else cout << "No";
}
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int, int>;
#define rep(i, n) for(int i = 0; i < (n); ++i)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define io ios::sync_with_stdio(false); cin.tie(0)

int main()
{
    io;
    ll t, n;
    cin >> t >> n;
    ll res = (100*n+(t-1))/t + n-1;
    cout << res << endl;
    return 0;
}