//1488 方程求解 #include<iostream> #include<cstdio> #include<cstring> #include<cmath> using namespace std; int main(){ int m=0,n=0,x,y; cin>>m>>n; for(int x=1;x<=m;x++){ y=m-x; if(x*y==n){ cout<<"Yes"; return 0; } } cout<<"No"; return 0; }