#include<bits/stdc++.h>

using namespace std;
using ll=long long;
#define rep2(i, a, n) for(int i = (a); i < (n); i++)
#define rep(i, n) rep2(i,0,n)

void in(){} template<typename Head,typename... Tail> void in(Head&& head,Tail&&... tail){cin>>head;in(forward<Tail>(tail)...);}

void out(){cout<<endl;} template<typename Head,typename... Tail> void out(Head&& head,Tail&&... tail){cout<<head<<" ";out(forward<Tail>(tail)...);}

ll hoge(int a,int n){
  if(n==1)return n;
  return a*hoge(a,n-1);
}

int main(){
  cin.tie(nullptr);ios_base::sync_with_stdio(false);
  int n,z;
  in(n,z);
  ll a,b,c=hoge(z,n);
  rep2(x,1,z+1){
    a=hoge(x,n);
    rep2(y,1,z+1){
      b=hoge(y,n);
      //out(a,b,c);
      if(a+b==c){
        cout<<"Yes"<<endl;
        return 0;
      }
    }
  }
  cout<<"No"<<endl;
}