#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ /* int n,x=0,c=0; cin>>n; int a[n]; for(int i=0;i<=n-1;i++){ cin>>a[i]; } for(int i=0;i<=n-1;i++){ if(a[i]>=x){ x=a[i]; }else{ c++; } } cout<<c; */ /* int n,s=0; cin>>n; int a[n][n]; for(int k=0;k<n/2+1;k++){ for(int i=k;i<n-k;i++){ for(int j=k;j<n-k;j++){ a[i][j]=k+1; } } } for(int i=0;i<=n-1;i++){ for(int j=0;j<=n-1;j++){ cout<<a[i][j]<<" "; } cout<<endl; } */ int n,m; cin>>m>>n; for(int x=0;x<=m;x++){ if(x*(m-x)==n){ cout<<"Yes"<<endl; return 0; } } cout<<"No"<<endl; return 0; }