/**
 *	  author : Nikh1l
 *	  created: 27.02.2021 17:29:54
**/
#include<bits/stdc++.h>

using namespace std;

using ll = int64_t;

void Learner() {

	double a, b, ans = 0;
	cin >> a >> b;
	cout << setprecision(10) << (a - b)*100/a;
  
}

int32_t main() {

  ios::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
	Learner();
}
#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N = 2e5 + 10, oo = 1e9 + 10, MOD = 1e9 + 7;
ll s, p;
main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> s >> p;
	for(ll i = 1; i * i <= p; i++) {
	    if(p % i == 0) {
	        if(p / i + i == s) {
	            cout << "Yes\n";
	            return 0;
	        }
	    }
	}
	cout << "No\n";
}