    #include <iostream>
    using namespace std;
    int main(){
    string a,b;
    cin>>a>>b;
    int x=stoi(a+b);
    for(int i=1; i<=1000; i++)
    if(i*i ==x){
    cout<<"Yes"<<endl;
    }
    else 
    cout<<"No"<<endl;
    }
    }