#include using namespace std; typedef signed long long ll; #undef _P #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) //------------------------------------------------------- ll N,K; vector R[202020]; void solve() { int i,j,k,l,r,x,y; string s; cin>>N>>K; ll sum=N*(N+1)/2; if(sum%K) return _P("No\n"); if(N/K%K==0) { FOR(i,N/K) { FOR(j,K) { R[(i+j)%K].push_back(i*K+j+1); } } } else if(N/K%2==0) { FOR(i,N/K) { FOR(j,K) { if(i%2==0) R[j].push_back(i*K+j+1); else R[K-1-j].push_back(i*K+j+1); } } } else { return _P("No\n"); } cout<<"Yes"<