#include using namespace std; #define int long long #define REP(i,n) for(int i = 0;i < (int)(n);i++) #define RREP(i,n) for(int i = (int)n-1;i >= 0;i--) #define FOR(i,s,n) for(int i = s;i < (int)n;i++) #define RFOR(i,s,n) for(int i = (int)n-1;i >= s;i--) #define ALL(a) a.begin(),a.end() #define IN(a, x, b) (a<=x && xinline bool CHMAX(T&a,T b){if(ainline bool CHMIN(T&a,T b){if(a>b){a = b;return true;}return false;} constexpr long long INF = 1e18; signed main(){ int N,K; cin>>N>>K; int sum = N * (N + 1) / 2; if(N % K || sum % K){ cout << "No" << endl; return 0; } vector>ans(K); REP(i,N/K){ REP(j,K){ ans[(j + i) % K].push_back(i * K + j); } } cout << "Yes" << endl; REP(i,K){ REP(j,ans[i].size()){ if(j)cout<<" "; cout << ans[i][j] + 1; } cout << endl; } }