#include #define rep(i,n) for(int i=0;i<(n);i++) using namespace std; using lint=long long; bool dfs(lint x,lint y){ if(x==0 || y==0) return true; if(x%2==1 && y%2==1) return false; if(x%2==1) return dfs(x-1,y/2); if(y%2==1) return dfs(x/2,y-1); return dfs(x-1,y/2) || dfs(x/2,y-1); } int main(){ lint x,y; cin>>x>>y; puts(dfs(x,y)?"Yes":"No"); /* bool vis[50][50]={}; vis[0][0]=true; queue> Q; Q.emplace(0,0); while(!Q.empty()){ int y,x; tie(y,x)=Q.front(); Q.pop(); if(y+1<50 && 2*x<50 && !vis[y+1][2*x]) vis[y+1][2*x]=true, Q.emplace(y+1,2*x); if(2*y<50 && x+1<50 && !vis[2*y][x+1]) vis[2*y][x+1]=true, Q.emplace(2*y,x+1); } rep(i,50){ printf("%2d: ",i); rep(j,50) putchar(vis[i][j]?'#':'.'); puts(""); } */ return 0; }