N = list(input())

for i in range(len(N)):
    if N[i] == "3":
        N[i] = "2"
        for j in range(i+1, len(N)):
            N[j] = "9"
        break

if sum(int(n) for n in N)%3 == 0:
    N[-1] = "8"

print("".join(N))