#include using namespace std; #define inf INT_MAX #define INF LLONG_MAX #define ll long long #define ull unsigned long long #define M (int)(1e9+7) #define P pair #define FOR(i,m,n) for(int i=(int)m;i<(int)n;i++) #define RFOR(i,m,n) for(int i=(int)m;i>=(int)n;i--) #define rep(i,n) FOR(i,0,n) #define rrep(i,n) RFOR(i,n,0) #define all(a) a.begin(),a.end() const int vx[4] = {0,1,0,-1}; const int vy[4] = {1,0,-1,0}; #define F first #define S second #define PB push_back #define EB emplace_back #define int ll #define vi vector #define IP pair #define PI pair #define PP pair #define Yes(f){cout<<(f?"Yes":"No")< s; void f(int a,int b){ if(s.find(P(a,b))!=s.end()) return; s.insert(P(a,b)); flag|=(a==0||b==0); if(a<=0||b<=0){ return; } if(a%2==0) f(a/2,b-1); if(b%2==0) f(a-1,b/2); } signed main(){ cin.tie(0); ios::sync_with_stdio(false); cout<>a>>b; f(a,b); Yes(flag); }