import sys # sys.setrecursionlimit(200005) int1 = lambda x: int(x)-1 pDB = lambda *x: print(*x, end="\n", file=sys.stderr) p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr) def II(): return int(sys.stdin.readline()) def LI(): return list(map(int, sys.stdin.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def LI1(): return list(map(int1, sys.stdin.readline().split())) def LLI1(rows_number): return [LI1() for _ in range(rows_number)] def SI(): return sys.stdin.readline().rstrip() # dij = [(0, 1), (-1, 0), (0, -1), (1, 0)] dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)] inf = (1 << 63)-1 # inf = (1 << 31)-1 md = 10**9+7 # md = 998244353 n,k=LI() if k==1 or n-1==k: print("No") exit() print("Yes") if k==2: print(1,2,2) print(2,3,-3) print(3,4,2) for i in range(5,n+1): print(3,i,2) elif k==3: print(1,2,2) print(2,3,-5) print(3,4,2) for i in range(5,n+1): print(3,i,2) else: for i in range(k): print(i+1,i+2,-1) m=(n+1)//2 for i in range(k+2,n+1): print(m,i,n)