#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp> // Common file
#include <ext/pb_ds/tree_policy.hpp>     // Including tree_order_statistics_node_update
using namespace __gnu_pbds;
using namespace std;
/*
         ########     ########   ########   #########   ##       #######   ##       #######
         #      #     #      #   #      #       #       # #      #     #   # #      #     #
         #      #     #      #   #      #       #       #  #     #     #   #  #     #     #
         ########     #      #   #      #       #       #   #    #     #   #   #    #     #
         ###          #      #   #      #       #       #    #   #######   #    #   #######
         #  #         #      #   #      #       #       #   #    #     #   #   #    #     #
         #   #        #      #   #      #       #       #  #     #     #   #  #     #     #
         #    #       #      #   #      #       #       # #      #     #   # #      #     #
         #     #      ########   ########       #       ##       #     #   ##       #     #     
*/

#define rep(i, a, b) for (__typeof((b)) i = (a); i < (b); i++)
#define nrep(i, a, b) for (__typeof((b)) i = (a); i > (b); i--)
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second
#define ppi pair<int, int>
#define pppi pair<ppi, int>
#define vi vector<int>
#define vii vector<ppi>
#define viii vector<pppi>
#define vs vector<string>
#define pb push_back
#define bitcount __builtin_popcount //count no's of ones in a set bit
#define prq priority_queue
#define mp make_pair
#define mem(x, val) memset((x), (val), sizeof(x));
#define sz(x) (int)x.size()
#define M_PI 3.14159265358979323846
#define rootdada                      \
    ios_base::sync_with_stdio(false); \
    cin.tie(0);                       \
    cout.tie(0);
#define test  \
    int t;    \
    cin >> t; \
    while (t--)
#define debug(a)          \
    cerr << #a << ": ";   \
    for (auto i : a)      \
        cerr << i << " "; \
    cerr << '\n';
#define trace(a) cerr << #a << ": " << a << "\n"
#define print(ar, n)            \
    for (int u = 0; u < n; u++) \
    {                           \
        cout << ar[u] << " ";   \
    }                           \
    cout << endl;
#define int long long
#define M 1000000007
#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
signed main()
{
    rootdada;
    // #ifndef ONLINE_JUDGE
    //     freopen("input.txt", "r", stdin);
    //  //   freopen("output.txt", "w", stdout);
    //  //  freopen("error.txt", "w", stderr);
    // #endif
    int x;
    cin >> x;
    if (x >= 400 && x <= 599)
    {
        cout << 8 << endl;
    }
    if (x >= 600 && x <= 799)
    {
        cout << 7 << endl;
    }
    if (x >= 800 && x <= 999)
    {
        cout << 6 << endl;
    }
    if (x >= 1000 && x <= 1199)
    {
        cout << 5 << endl;
    }
    if (x >= 1200 && x <= 1399)
    {
        cout << 4 << endl;
    }
    if (x >= 1400 && x <= 1599)
    {
        cout << 3 << endl;
    }
    if (x >= 1600 && x <= 1799)
    {
        cout << 2 << endl;
    }
    if (x >= 1800 && x <= 1999)
    {
        cout << 1 << endl;
    }
}

Measured memory_bytes: 3648