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["num = list(map(int, input()))\nbest = num[:]\nfor i in range(-1, -len(num) - 1, -1):\n    if num[i] == 0:\n        continue\n    num[i] -= 1\n    for j in range(i + 1, 0):\n        num[j] = 9\n    if sum(num) > sum(best):\n        best = num[:]\ns = ''.join(map(str, best)).lstrip('0')\nprint(s)\n", "s_num = input()\nnum = int(s_num)\ndigs = [int(s_num[i]) for i in range(len(s_num))]\n\nmax_sum = sum(digs)\nres = num\nfor i in range(len(s_num)):\n    if (digs[i] != 0):\n        digs[i] -= 1\n        n_sum = sum(digs[:i + 1]) + 9 * (len(s_num) - i - 1)\n        if n_sum >= max_sum:\n            n_res = int(''.join([str(digs[i]) for i in range(i + 1)]) + '9' * (len(s_num) - i - 1))\n            if (n_sum == max_sum):\n                res = max(n_res, res)\n            else:\n                res = n_res\n            max_sum = n_sum\n\n        digs[i] += 1\nprint(res)\n", "a=int(input())\nif(a//10==0):\n    print(a)\n    return\nk=9\nwhile(k<a):\n    k=k*10+9\nif(k==a):\n    print(k)\nelse:\n    k//=10\n    k=int(str(a)[0]+str(k))\n    i=len(str(k))-1\n    z=k\n    while(z>a):\n        z=int(str(k)[0:i]+str(int(str(k)[i])-1)+str(k)[i+1:len(str(k))])\n        i-=1\n    print(z)    ", "x = int(input())\nif x < 10:\n    print(x)\nelif x == int(str(x)[0] + '9'*(len(str(x))-1)):\n    print(x)\nelse:\n    a = str(x)[0] + '9' * (len(str(x)) - 1)\n    a = list(a)\n    for i in range(len(a) - 1, -1, -1):\n        k = a[i]\n        a[i] = str(int(a[i]) - 1)\n        if x >= int(''.join(a)):\n            print(int(''.join(a)))\n            break\n        a[i] = k\n", "def sum_str(y):\n    return sum(map(int, str(y)))\n\n\nx = input()\nlength = len(x)\nbad_answer = str(int(x[0]) - 1) + '9' * (length - 1) \ntotal = sum_str(bad_answer)\n\n\nif length == 1 or sum_str(x) >= total:\n    print(x)\nelse:\n    for i in range(length - 1, 0, -1):\n        new_total = 9 * (length - i)\n        new_answer = str(int(x[:i]) - 1)\n        new_total += sum_str(new_answer)\n\n        if new_total >= total:\n            new_answer = new_answer if new_answer != '0' else ''\n            print(new_answer + '9' * (length - i))\n            break\n    else:\n        print(bad_answer)\n", "import sys\n\ndef calc(s):\n    res =0\n    for c in s:\n        res+= int(c)\n    return res\n\n\ns = list(sys.stdin.readline().rstrip())\nbest = \"\".join(s) \ncount = calc(s)\n\ni = len(s)-1\nwhile i!=0:\n    i-=1\n    if s[i+1]!= '9':\n        s[i+1] = '9'\n        while s[i]=='0':\n            s[i]='9'\n            i-=1\n        s[i] = chr(ord(s[i])-1)\n        c = calc(s)\n        if count < c:\n            count = c\n            best = \"\".join(s)\n\nif best[0] == '0':\n    best = best[1:]\n\nprint(best)", "x = input()\nn = len(x)\nif n == 1:\n    print(x)\n    return\nans = \"\"\ns = 0\nps = 0\npn = \"\"\nfor i in range(n):\n    ts = ps + int(x[i]) - 1 + 9 * (n - i - 1)\n    if ts >= s:\n        ans = pn + str(int(x[i]) - 1) + \"9\" * (n - i - 1)\n        s = ts\n    ps += int(x[i])\n    pn += x[i]\nif ps >= s:\n    ans = pn\nprint(int(ans))", "n = int(input())\n\ndef f(numb):\n    lst = [numb]\n    cap = 10\n\n    while numb // cap > 0:\n        lst.append((numb // cap - 1) * cap + cap - 1)\n        cap *= 10\n\n    return lst\n\ndef g(numb):\n    lst = []\n    while numb != 0:\n        lst.append(numb % 10)\n        numb //= 10\n\n    return lst\n\n\nmaximum = max([sum(g(i)) for i in f(n)])\n\nmaximum = [i for i in f(n) if maximum == sum(g(i))]\n\nprint(max(maximum))", "\"\"\" Created by Shahen Kosyan on 3/11/17 \"\"\"\n\ndef __starting_point():\n    x = input()\n\n    if int(x) < 10:\n        print(x)\n        return\n\n    arr = [int(a) for a in list(x)]\n    x_sum = sum(arr)\n\n    i = len(arr) - 1\n    answer = ''\n    while i > 0:\n        if arr[i] != 9 and arr[i] != 8:\n            arr[i - 1] -= 1\n            answer = '9' + answer\n        else:\n            change = False\n            for j in range(i - 1, 0, -1):\n                if arr[j] < 9:\n                    change = True\n                    break\n\n            if arr[i] == 8 and change:\n                answer = '9' + answer\n                arr[i - 1] -= 1\n            else:\n                if not change:\n                    answer = str(arr[i]) + answer\n                else:\n                    answer = '9' + answer\n\n        if i == 1 and arr[0] != 0:\n            answer = str(arr[0]) + answer\n        i -= 1\n\n    answer = [int(a) for a in list(answer)]\n    if x_sum == sum(answer):\n        print(x)\n    else:\n        answer = [str(a) for a in answer]\n        print(''.join(answer))\n\n__starting_point()", "x=input()\nl=len(x)\nx=int(x)\ns='9'*l\nsx=str(x)\nm=int(s)\nc=0\nwhile c!=1:\n    if m>x:\n        m=m-10**(l-1)\n    else:\n        c=1\nsm=str(m)\nmm=[] \nfor i in range(len(sm)):\n    mm.append(int(sm[i]))\nxx=[] \nfor i in range(l):\n    xx.append(int(sx[i]))\nif m==x:\n    print(m)\nelif sum(xx)==sum(mm):\n    print(x)\nelse:\n    k=len(xx)-1\n    while k>=0:\n        if sum(xx)<sum(mm):\n            if xx[k]==9:\n                k-=1\n            else:\n                xx[k]=9\n                xx[k-1]-=1\n                k-=1\n        else:\n            if xx[0]==0:\n                xx.remove(0)\n            for b in range(len(xx)):\n                xx[b]=str(xx[b])\n            ww=''.join(xx)\n            print(ww)\n            break", "x = input()\nvariants = [x] + [str(int(x[:i]) - 1) +\n    '9' * (len(x) - i) for i in range(1, len(x))]\nprint(int(max(variants, key=lambda x: (sum(map(int, x)), int(x)))))\n", "def sum_div(n):\n    summa = 0\n    while n > 0:\n        summa = summa + n % 10\n        n = n // 10\n    return summa\n\n\ndef run(n):\n    l_n = len(n)\n    left = ''\n    if l_n > 2 and '9' * l_n != n and n[1] == '9' and '9' * (l_n - 1) != n[1:]:\n        left = n[0]\n        n = n[1:]\n        while l_n > 1 and n[1] == '9':\n            left += n[1]\n            n = n[1:]\n            l_n = len(n)\n    l_n = len(n)\n    if len(n) == 1:\n        return n\n    elif '9' * (l_n - 1) == n[1:]:\n        return left + n\n    elif n[0] != '1':\n        min_number = int(str(int(n[0]) - 1) + '9' * (l_n - 1))\n        if sum_div(min_number) > sum_div(int(n)):\n            return left + str(min_number)\n        else:\n            return left + n\n    else:\n        min_number = int('9' * (l_n - 1)) if l_n > 1 else 0\n        if sum_div(min_number) > sum_div(int(n)):\n            return left + str(min_number)\n        else:\n            return left + n\n\n\nn = input()\nprint(run(n))\n", "#This code is dedicated to Olya S.\n\ndef e(x):\n    s=0\n    while x>0:\n        s+=x%10\n        x//=10\n    return s\n\ndef down(x):\n    l=len(x)-1\n    return str(int(x[0])-1)+'9'*l\n\nn=input()\nif len(n)>1 and n[1]=='9':\n    print(n[0],end='')\n    n=n[1:]\n    while len(n)>1 and n[0]=='9' and n[1]=='9':\n        print('9',end='')\n        n=n[1:]\n\nif e(int(n))>=e(int(down(n))):\n    print(n)\nelse:\n    print(int(down(n)))\n\n        \n     \n\n\n\n        \n\n", "def sum_n(n):\n    l = len(n)\n\n    summ = 0\n    for i in range(l):\n        summ += int(n[i])\n\n    return summ\n\ndef transfer(x, i):\n    x = list(x)\n    \n    x[i+1] = '9'\n    if x[i] != '0':\n        x[i] = str(int(x[i])-1)\n    else:\n        j = i\n        while (j > 0) and (int(x[j]) == 0):\n            x[j] = '9'\n            j -= 1\n        x[j] = str(int(x[j])-1)\n    if (x[0] == '0'):\n        del x[0]\n\n    return x\n\nx = list(input())\nmax_cifr = sum_n(x)\nmaxnum = x\nres = ''\n\nfor i in range(len(x)-2, -1, -1):\n    x = transfer(x, i)\n    if(max_cifr < sum_n(x)):\n        max_cifr = sum_n(x)\n        maxnum = x\n\nfor i in range(len(maxnum)):\n    res = res+maxnum[i]\n    \nprint(res)\n", "x = input()\nsum = 0\nfor i in x:\n    temp = int(i)\n    sum += temp\n\nxlen = len(x)\none = int(x[0])\ntry:\n    two = int(x[1])\nexcept:\n    two = 0\n\nif (two == 9):\n    count = 1\n    for i in range(1, xlen):\n        z = int(x[i])\n        if (z == 9):\n            count = i\n        else:\n            break\n    answ = x[0:count] + \"8\" + (\"9\" * (xlen - count - 1))\nelif (one == 1):\n    answ = '9' * (xlen - 1)\nelse:\n    answ = str((one - 1)) + (\"9\" * (xlen-1))\n\nansw = str(answ)\nsumansw = 0\nfor i in answ:\n    temp = int(i)\n    sumansw += temp\n\nif (sum >= sumansw):\n    print(x)\nelse:\n    print(answ)", "def sum1(x):  # \u043f\u043e\u0434\u0441\u0447\u0451\u0442 \u0441\u0443\u043c\u043c\u044b \u0446\u0438\u0444\u0440 \u0447\u0438\u0441\u043b\u0430 x\n    summa = 0\n    for i in x:\n        summa += int(i)\n    return summa\n\n\nx = input()\nc = sum1(x)\nresult = int(x)\nn = len(x) - 1\nj = n\nfor i in range(0, n):\n    if x[i] != '0':\n        ni = int(x[i]) - 1  # \u0443\u043c\u0435\u043d\u044c\u0448\u0430\u044e i-\u044b\u0439 \u0440\u0430\u0437\u0440\u044f\u0434 \u043d\u0430 1\n        xi = x[0:i] + str(ni) + '9' * j  # \u0441\u0442\u0440\u043e\u044e \u043d\u043e\u0432\u043e\u0435 \u0447\u0438\u0441\u043b\u043e\n        j -= 1\n        ci = sum1(xi)\n        if c < ci:\n            c = ci\n            result = int(xi)\n        elif c == ci and result < int(xi):\n            result = int(xi)\n    else:\n        j -= 1\n        continue\nprint(result)\n", "def f(n, k):\n    n = str(n)\n    if n[k] == \"0\":\n        return f(n, k - 1)\n    a = []\n    for i in n:\n        a.append(int(i))\n    n = a\n    n[k] = int(n[k]) - 1\n    n[k + 1::] = [9] * (len(n) - k - 1)\n    return n\na = input()\nn = len(a)\nans = [int(x) for x in a]\nms = sum(ans)\nfor i in range(0, n):\n    ca = f(a, i)\n    cs = sum(ca)\n    if cs> ms:\n        ans = ca\n        ms = cs\n    elif cs == ms:\n        if int(''.join([str(_) for _ in ca])) > int(''.join([str(_) for _ in ans])):\n            ans = ca\nprint(int(''.join([str(_) for _ in ans])))", "n = int(input().strip())\n\ns = []\nwhile n > 0:\n    s.append(n % 10)\n    n //= 10\ns = s[::-1]\n\nn = len(s)\nans = 0\nbest = -1\nfor i in range(n):\n    res = sum(s[:i + 1]) - 1 + 9 * (n - i - 1)\n    if res >= ans:\n        ans = res\n        best = i\n\ndef get(s, pos):\n    ans = 0\n    for i in range(len(s)):\n        if i > pos:\n            ans = ans * 10 + 9\n        else:\n            ans = ans * 10 + s[i]\n            if i == pos:\n                ans -= 1\n    return ans\n\nif sum(s) >= ans:\n    print(get(s, n))\nelse:\n    print(get(s, best))\n\n", "def main():\n\n\tdef sum(x):\n\t\tres = 0\n\n\t\twhile x > 0:\n\t\t\tres += x % 10\n\t\t\tx //= 10\n\n\t\treturn res\n\n\tn = input()\n\tfirst = n[0]\n\tp = [1]\n\n\tfor i in range(1, 20):\n\t\tp.append(p[-1] * 10)\n\n\tdata = []\t\n\tfor i in range(len(n)):\n\t\tif i > 0 and n[i] == '0':\n\t\t\tcontinue\n\t\ttemp = n[:i] + str(max(0, int(n[i]) - 1)) + \"9\"* (len(n) - i - 1)\n\t\tdata.append((sum(int(temp)), int(temp)))\n\n\tdata.append((sum(int(n)), int(n)))\n\t\n\tdata.sort(reverse=True)\n\n\tprint(data[0][1])\n\n\treturn\n\ndef __starting_point():\n\tmain()\n__starting_point()", "def cnt_sum(str_num):\n\tsum = 0\n\tfor a in str_num:\n\t\tsum += ord(a) - ord('0')\n\treturn sum\n\nstr_a = input().strip()\nmax_sum = cnt_sum(str_a)\nans = str_a\ncnt_digit = len(str_a)\n\nfor i in range(cnt_digit - 1, -1, -1):\n\tif str_a[i] != '0':\n\t\tnew_str = str_a[:i] + chr(ord(str_a[i]) - 1) + '9'*(cnt_digit - i - 1)\n\t\tcur_sum = cnt_sum(new_str)\n\t\tif cur_sum > max_sum:\n\t\t\tmax_sum = cur_sum\n\t\t\tans = new_str\n\nprint(int(ans))\n", "def summaX(x):\n    k=0\n    for el in x:\n        k+=int(el)\n    return k\nn=input();N=[];Z=[]\nfor el in n:\n    N.append(el)\nz=summaX(N)\nZ=N.copy()\nfor i in range(1,len(N)):\n    if int(N[i])!=9:\n        N[i-1]=int(N[i-1])-1\n        for j in range(i,len(n)):\n            N[j]=9\nif z>=summaX(N):\n    for el in Z:\n        print(el,end='')\nelse:\n    if N[0]==0:\n        N.pop(0)\n    for el in N:\n        print(el,end='')\n", "n = int(input())\n\ndef sumd(n):\n\tj = n\n\tsumn = 0\n\twhile j:\n\t\tsumn += j % 10\n\t\tj //= 10\n\treturn sumn\n\nj = n\nstrn = str(n)\nl = len(strn)\nsumn = sumd(n)\n\nstra = [i for i in str(n)]\ni = 1\nwhile i < l and stra[i] == '9':\n\ti += 1\nif (i != l):\n\tstra[i - 1] = str(int(stra[i - 1]) - 1)\n\twhile i < l:\n\t\tstra[i] = '9'\n\t\ti += 1\n\nss = ''\nfor i in range(l):\n\tss += stra[i]\nif ss[0] == '0':\n\tss = ss[1:]\nsn = int(ss)\n\nif sn < n and sumd(sn) <= sumn:\n\tss = strn\n\tsn = n\n\nprint(ss)\n", "from random import randint\n\ndef f(s):\n    a = 0\n    for i in s:\n        a += int(i)\n    return a\n\ndef solve(n):\n    n1 = list(str(n))\n    ans = 0\n    maxx = 0\n    for i in range(len(n1)):\n        n2 = n1[:i] + [str(int(n1[i]) - 1)] + ['9' for j in range(len(n1) - i - 1)]\n        if f(n2) >= maxx:\n            maxx = f(n2)\n            ans = n2\n    if f(n1) >= maxx:\n        maxx = f(n1)\n        ans = n1\n    return [int(''.join(ans)), maxx]\n\ndef tl(n):\n    ans = 0\n    maxx = 0\n    for i in range(1, n + 1):\n        if f(list(str(i))) >= maxx:\n            maxx = f(list(str(i)))\n            ans = i\n    return [ans, maxx]\n\n'''for kkk in range(100):\n    n = randint(1, 10 ** 5)\n    c1 = solve(n)\n    c2 = tl(n)\n    if c1 != c2:\n        print(n)\n        print(c1)\n        print(c2)\nprint('ok')'''\nn = int(input())\nprint(solve(n)[0])\n", "a = [1, 2, 3, 4, 5, 6, 7, 8, 9]\nfor length in range(2, 30):\n    for first in range(1, 10):\n        for pos in range(1, length):\n            a.append(int(str(first) + '9' * (pos - 1) + '8' + '9' * (length - pos - 1)))\n        a.append(int(str(first) + '9' * (length - 1)))\n    \nn = int(input())\nl = 0\nr = len(a)\nwhile l < r - 1:\n    middle = (l + r) // 2\n    if (a[middle] <= n):\n        l = middle\n    else:\n        r = middle\n        \nprint(a[l])", "def get(s):\n    ans = 0\n    for i in s:\n        ans += (ord(i) - ord('0'))\n    return ans\n\n\ndef solve1():\n    x = input()\n    n = len(x)\n    best_ans = x\n    best_val = get(x)\n    ans = str('' if int(x[0]) - 1 == 0 else int(x[0]) - 1) + '9' * (n - 1)\n    if get(ans) > best_val or (get(ans) >= best_val and int(ans) > int(best_ans)):\n        best_ans = ans\n        best_val = get(ans)\n    for i in range(1, n):\n        #print(ans)\n        ans = x[:i] + str(int(x[i]) - 1) + '9' * (n - i - 1)\n        if get(ans) > best_val or (get(ans) >= best_val and int(ans) > int(best_ans)):\n            best_ans = ans\n            best_val = get(ans)\n    return best_ans\n    \nbest = [0] * 10000\ndef solve2():\n    nonlocal best\n    was = 0\n    for i in range(1, 10000):\n        if get(str(i)) >= was:\n            best[i] = i\n            was = get(str(i))\n        else:\n            best[i] = best[i - 1]\n    \ndef stress():\n    solve2()\n    for i in range(1, 10000):\n        if int(solve1(str(i))) != best[i]:\n            print(i, best[i], solve1(str(i)))\n\n#stress()\nprint(solve1())"]