N = int(input())
Nl = list(str(N))
N0 = 0
N0l = list(str(N0))
while "7" in Nl or "7" in N0l:
    N = N-10
    Nl = list(str(N))
    N0 = N+10
    N0l = list(str(N0))
print(N,N0)