#include<iostream> //输入函数库 #include<iomanip> #include<cmath> //数学函数库 #include<cstdio> #include<ctime> #include<cstring> #include<cstdlib> #include<string> #include<stdlib.h> #include<sys/time.h> using namespace std; int main(){ int x,y,m,n; cin>>m>>n; for(x=0;x<=m;x++) { for(y=0;y<=m;y++) { if(x+y==m) { if(x*y==n) { cout<<"Yes"; return 0; } } } } cout<<"No"; return 0; }