#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,m; cin>>n>>m; for(int x=0;x<=n;x++) { for(int y=0;y<=n;y++) { if(x+y==n&&x*y==m) { cout<<"yes"<<endl; return 0; } } } cout<<"no"<<endl; return 0; }