# include<iostream> using namespace std; int main(){ int a,n,g,s,b; cin>>a>>b; for(int i=a;i<=n;i++){ g=i%10; s=i/10%10; b=i/100; if(g*g*g+s*s*s+b*b*b==i&&i>=a&&i<=n){ cout<<"no"; return 0; } } cout<<"yes"; return 0; }