def Smallest_Prime_Factor(N): """0,1,2,...,Nの最小の素因数のリスト(0,1については1にしている) """ if N==0: return [1] N=abs(N) L=list(range(N+1)) L[0]=L[1]=1 x=4 while x<=N: L[x]=2 x+=2 x=9 while x<=N: if L[x]==x: L[x]=3 x+=6 x=5 Flag=True while x*x<=N: if L[x]==x: y=x*x while y<=N: if L[y]==y: L[y]=x y+=x<<1 x+=2 if Flag else 4 return L def Faster_Prime_Factorization(N,L): """ L:Smallest_Prime_Factors(N)で求めたリスト """ N=abs(N) D=[] while N>1: a=L[N] k=0 while L[N]==a: k+=1 N//=a D.append([a,k]) return D #================================================ import sys write=sys.stdout.write X=int(input()) L=Smallest_Prime_Factor(X) f=[0]*(X+1) for x in range(1,X+1): T=Faster_Prime_Factorization(x,L) m=1 for p,e in T: m*=e+1 f[x]=x-m Min=float("inf") for A in range(1,X): B=X-A Min=min(Min,abs(f[A]-f[B])) for A in range(1,X): B=X-A if abs(f[A]-f[B])==Min: write("{} {}\n".format(A,B))