#include <iostream> using namespace std; int main(){ int m,n,flag,b; cin>>m>>n; flag =0; for(int a=1;a<m;a++) //遍历 开始 { b = m-a; if( a*b == n) { cout<<"Yes"<<endl; flag =1; break; } } //遍历 结束 if(flag == 0 ) cout<<"No"; return 0; }