#include <iostream> using namespace std; long long n,m; int main () { // freopen("dist.in", "r", stdin); // freopen("dist.out", "w", stdout); cin>>n>>m; if(n>=0&&n<m||n<0&&0-m>n){ cout<<"No"; return 0; } if(n>=0){ m-=n; } if(n<0){ m+=n; } if(m%2==0){ cout<<"Yes"; } else{ cout<<"No"; } return 0; }