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