#include using namespace std; int main(){ int q, k; cin >> q >> k; if(q%2 == 0 || k <= q/2+1 || q < 3 || k > q){ cout << "No" << endl; return 0; } cout << "Yes" << endl; cout << "1 2" << endl; cout << "1 3" << endl; cout << "2 4" << endl; // 0:2 1:3 if(false){ for(int i=0; i