#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; bool flag=false; void f(int n,int m,P p){ if(s.find(p)!=s.end()) return; if(n>=a||m>=b){ if(n==a&&m==b) flag=true; return; } f(2*n,m+1,P(p.F+1,p.S)); f(n+1,2*m,P(p.F,p.S)); } signed main(){ cin.tie(0); ios::sync_with_stdio(false); cout<>a>>b; f(0,0,P(0,0)); Yes(flag); }