#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef    long double   ld;

//typedef    unordered_set<ll>   usll;
//typedef    unordered_multiset<ll>   umsll;

/*** Loops ***/
#define ffit(i, dat)    for (__typeof(dat.begin()) i = dat.begin(); i != dat.end(); ++i)
#define ff1(i,a,b) for(ll i = a; i < b; i++)
#define ff2(i,a,b) for(ll i = b-1; i >= a; i--)
#define ff3(i,a,b,m) for(ll i = a; i <b; i+=m)
#define ipar(ar,n) ll ar[n]; ff1(i,0,n) cin>>ar[i];
#define opar(ar,n) ff1(i,0,n) cout<<ar[i]<<" ";
#define foRev(num) for(ll i = num - 1; i >= 0; i--)
#define forIn(arr, num) for(ll i = 0; i < num; i++) sc1(arr[i]);
#define forIn1(arr, num) for(ll i = 1; i <= num; i++) sc1(arr[i]);
#define vpnt(ans) for(ll i = 0; i < ans.size(); i++) cout << ans[i] << (i + 1 < ans.size() ? ' ' : '\n');
#define apnt(arr, num) for(ll i = 0; i < num; i++) cout << arr[i] << (i + 1 < num ? ' ' : '\n');
#define PI acos(-1.0)
#define eps 1e-7
#define size1 15
#define cu continue
#define br break
#define rsz resize
#define ins insert
#define ft front
#define bk back
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define ff first
#define ss second
#define mp make_pair
#define mem(name, value) memset(name, value, sizeof(name))
#define MN3(n1,n2,n3) min(n1,min(n2,n3))
#define MN4(n1,n2,n3,n4) min(n1,min(n2,min(n3,n4)))
#define MX3(n1,n2,n3) max(n1,max(n2,n3))
#define MX4(n1,n2,n3,n4) max(n1,max(n2,max(n3,n4)))
#define mxar(a,n) *max_element(a,a+n)
#define mnar(a,n) *min_element(a,a+n)
#define arr_sm(a,n) accumulate(a,a+n,0)
#define vc_sm(ve) accumulate(ve.begin(),ve.end(),0)
#define mx_vc(ve) *max_element(ve.begin(),ve.end())
#define mn_vc(ve) *min_element(ve.begin(),ve.end())
typedef vector <ll> vll;
#define vvll vector<vll>
typedef set <ll> sll;
typedef multiset <ll> msll;
//typedef multimap <ll> mpll;
typedef queue <ll> qll;
typedef map <ll, ll> mll;
typedef pair <ll, ll> pll;
typedef vector <pair <ll, ll> > vpll;
typedef priority_queue <pair <ll, ll> > pqpll;
#define maxpq priority_queue<int>
#define minpq priority_queue<int, vector<int>, greater<int> >
#define ml unordered_map<ll,ll>
///typedef    unordered_multiset<int>   umsi;
typedef    unordered_set<ll>   us;
///vector<vector<int>> v(10, vector<int>(20,500)); 2d vector initialization. of 10 rows and 20 columns, with value 500.

/*** Sorts ***/
#define czero(n)                    __builtin_popcountll(n) // count the number of 1's in the bit representation of a number
#define cenzero(n)                  __builtin_ctzll(n) // count the number of zereos from the end of the bit representation of a number until a 1
#define countbegzero(n)             __builtin_clzxll(n)
#define checkparity(n)              __builtin_parityll(n)// checks whether the number of bits are even or odd
#define all(v) (v).begin(), (v).end()
#define rev(v) reverse(all(v))
#define srt(v) sort(all(v))
#define srtgrt(v) sort(all(v), greater<ll>())
#define prsrt greater<pair<int,int>>()
#define ip(n) ll n; cin>>n;
#define ipp(n,k) ll n; cin>>n; ll k; cin>>k;
#define ip3(n,m,k) ll n; cin>>n;ll m;cin>>m; ll k; cin>>k;
#define kl    '\n'
#define no cout << "NO" << '\n'
#define yes cout << "YES" << '\n'
#define case cout << "Case " << t++ << ": ";
//#define ps(x,y)         fixed<<setprecision(y)<<x
#define inf             1e18
#define w(x)             ll x; cin>>x; while(x--)
#define go(i, a) for (auto &i : a)
#define go1(it, v) for(auto it = v.begin(); it != v.end(); ++it)
#define mk(arr,n,type) type *arr=new type[n];
#define sz(obj) (int(obj.size()))
#define ipve(vc,n) vll vc(n); ff1(i,0,n){cin>>vc[i];}
#define ipvc(vc,n) vll vc; ff1(i,0,n){ip(x);vc.pb(x);}
#define depressed()                    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
//bool ans = all_of(arr, arr + 6, [](int x) {return x & 1; } );
const double pi = 3.141592653589793238460;
#define TRACE
#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <typename Arg1>
    void __f(const char* name, Arg1&& arg1){
        cout << name << " : " << arg1 << endl;
        //use cerr if u want to display at the bottom
    }
    template <typename Arg1, typename... Args>
    void __f(const char* names, Arg1&& arg1, Args&&... args){
        const char* comma = strchr(names + 1, ','); cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
    }
#else
#define trace(...)
#endif
    bool isptsquare(long double x)
    {
        long double sr = sqrt(x);
        return ((sr - floor(sr)) == 0);
    }
    
    ll facts(ll n,ll mod)
    {
    	ll prod=1;
    	for(ll i=1;i<=n;i++)
    	{
    		prod=(prod*i)%mod;
    	}
    	return prod;
    }
    
    ll binpow(ll a, ll b, ll mod){
    	ll ans = 1;
    	while(b){
    		if(b&1) ans*=a;
    		a*=a;
    		ans%=mod;
    		a%=mod;
    		b/=2;
    	}
    	return ans;
    }
    ll mod = 1e9+7;
    vector<ll> factors(ll n){ // returns all factors of a given number
        ll lim = sqrt(n);
        vector<ll> f;
        for(int i = 1; i <= lim; i++){
            if(n % i == 0){
                f.push_back(i);
                f.push_back(n / i);
                if(i*i == n){
                    f.pop_back();
                }
            }
        }
        return f;
    }
    
    ll ceilAB(ll a, ll b){
        return (a + b - 1) / b;
    }
    ll bigmod(ll n,ll pow)
    {
        if(pow==0)
            return 1;
        if(pow==1)
            return n%mod;
    
        ll ans=bigmod(n,pow/2);
        ans=(ans*ans)%mod;
    
        if(pow%2==1)
        {
            ans=(ans*n)%mod;
        }
        return ans%mod;
    }
    
    const int mxn = 1e3;
    
    ll fact[mxn + 1];
    void calcfac(ll n, ll mod = 2e18){
    	fact[0]  = 1;
    	for(int i = 1; i<=n;++i){
    		fact[i] = fact[i-1]*i;
    		fact[i] %= mod;
    	}
    }
    
    ll nCr(ll p, ll q, ll mod = 2e18){
    	ll val = fact[p];
    	ll invfact = fact[q]*fact[p-q];
    	val%=mod;
    	invfact%=mod;
    	val*=binpow(invfact, mod - 2, mod);
    	return val%mod;
    }
    
    
    ll nPr(ll p, ll q, ll mod = 2e18){
    	ll val = nCr(p, q, mod);
    	val*=fact[q];
    	val%=mod;
    	return val;
    }
    
    bool isprime(ll n)
    {
        // Corner cases
        if (n <= 1)
            return false;
        if (n <= 3)
            return true;
        if (n % 2 == 0 || n % 3 == 0)
            return false;
    
        for (int i = 5; i * i <= n; i = i + 6)
            if (n % i == 0 || n % (i + 2) == 0)
                return false;
    
        return true;
    }
    ll power(ll x, ll y)
    {
        ll temp;
        if(y == 0)
            return 1;
        temp = power(x, y / 2);
        if (y % 2 == 0)
            return temp * temp;
        else
        {
            if(y > 0)
                return (x * temp * temp);
            else
                return ((temp * temp) / x);
        }
    }
    
    //ll pmod(ll a,ll b){ll res=1;a%=mod;assert(b>=0);for(; b; b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
    //ll expo(ll x, ll y){ ll res = 1; x = x % mod;  while (y > 0) { if (y & 1)res = (res*x) % mod; y = y>>1;x = (x*x) % mod;}return res;}
    //void matmul(ll a[][2], ll b[][2]) { ll tmp[2][2]; for(int i=0; i<2; i++) { for(int j=0; j<2; j++) { tmp[i][j] = 0; for(int k=0; k<2; k++) tmp[i][j] = (tmp[i][j] + a[i][k]*b[k][j]) % mod; }} for(int i=0; i<2; i++) for(int j=0; j<2; j++) a[i][j] = tmp[i][j]; }
    //ll fibo(int n)    // returns nth fibonacci number, also S(n) = f(n+2)-1
    //{ if(n == 0) return 0; else if(n == 1) return 1; ll T[2][2] = { {0, 1} , {1, 1} }; ll res[2][2] = { {1, 0}, {0,1} }; n--; while(n) { if(n & 1) matmul(res, T); n >>= 1; matmul(T, T); } return res[1][1]; }
    
    
    ll cbtr(ll n,ll m)
    {
        ll sm = 1;
        ff1(i,1,m+1)
        {
            sm*=(n-i+1);
            sm/=i;
        }
        return sm;
    }
    //string a="cdefghijklmnopqrstuvwxyz";
    ld f(ld n)
    {
        ld sm = 1;
        ff1(i,1,n+1)
        {
            sm*=i;
        }
        return sm;
    }
    ld pc(ld n, ld k)
    {
        ld sm = f(n)/f(n-k);
        return sm;
    }
    mll prime;
    void seive(ll n)
    {
        ff1(i,0,n+1) prime[i] = i;
       
        prime[0] = 0, prime[1] = 1;
        for (int i = 2; i*i <= n; i++)
            if (prime[i] == i)
                for (int j = i * i; j <= n; j += i)
                    prime[j] = i;
    }
    map< ll, ll > prime_factor(ll n) {
      map< ll, ll > ret;
      for(ll i = 2; i * i <= n; i++) {
        while(n % i == 0) {
          ret[i]++;
          n /= i;
        }
      }
      if(n != 1) ret[n] = 1;
      return ret;
    }
    bool p2(ll n)
    {
        if(n==0)
            return false;
    
        return (ceil(log2(n)) == floor(log2(n)));
    }
    #define cer cerr << "Time : " << 1000 * ((double)clock()) / (double)CLOCKS_PER_SEC << "ms\n";
    #define ps(x,y)         fixed<<setprecision(y)<<x
    ll modInverse(ll n, ll m){
        return binpow(n, m - 2, m);
    }
    bool cmp(pll a, pll b)
    {
         if(a.ss == b.ss)
         {
             return a.ff>b.ff;
         }
         return a.ff>b.ff;
    }
  
void fun()
{
    // akash bhora tara
    //     cf a all time mara
	ip(n);
    ll ct = 8;
    for(ll i = 600;i<2200;i+=200)
    {
        if(n<i)
        {
          cout<<ct;return;
        }
        ct--;
    }
}
int main()
{
//     ofstream cout ("ride.out");
//     ifstream cin ("ride.in");
    depressed();
  ll t = 1;
  //cin>>t;
  while(t--)
  {
     fun();
  }
  //cer;
  return 0;
}


Measured memory_bytes: 3660