for i in range(100000, 10000, -1):
    a = i // 10000
    b = i % 10000 // 1000
    c = i % 1000 // 100
    d = i % 100 // 10
    e = i % 10
    x = a + c + e
    y = b + d
    if(max(x, y)>9):
        ans = min(x, y)*100+max(x, y)
    else:
        ans = min(x, y)*10+max(x, y)
    if ans == 723:
        print(i)
        break