#include "bits/stdc++.h" using namespace std; int main() { int m,n; int flag = 0; cin >> m >> n; for(int i = 1;i <= m;i++) { int j = m - i; if(i * j == n) { flag = 1; break; } } if(flag == 1) { cout << "Yes"; } else { cout << "No"; } return 0; }