#include<bits/stdc++.h>

using namespace std;
typedef long long int ll;

#define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;
#define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;}
#define ALL(v) (v).begin(),(v).end()
#define BIGINT 0x7FFFFFFF

template<typename T1,typename T2>
ostream& operator <<(ostream &o,const pair<T1,T2> p){o<<"("<<p.first<<":"<<p.second<<")";return o;}

int memo[]={0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,6,6,6,6,6,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,10,10,10,10,10,11,11,11,11,11,11,12,12,12,12,12,12,13,13,13,13,13,13,14,14,14,14,14,14,14,14,14,14,14,15,15,15,15,15,15,16,16,16,16,16,17,17,17,17,17,17,18,18,18,18,18,18,18,18,18,18,18,19,19,19,19,19,19,20,20,20,20,20,21,21,21,21,21,21,22,22,22,22,22,22,22,22,22,22,22,23,23,23,23,23,23,24,24,24,24,24,25,25,25,25,25,25,26,26,26,26,26,26,27,27,27,27,27,27,28,28,28,28,28,28,28,28,28,28,28,29,29,29,29,29,29,30,30,30,30,30,31,31,31,31,31,31,32,32,32,32,32,32,32,32,32,32,32,33,33,33,33,33,33,34,34,34,34,34,35,35,35,35,35,35,36,36,36,36,36,36,36,36,36,36,36,37,37,37,37,37,37,38,38,38,38,38,39,39,39,39,39,39,40,40,40,40,40,40,40,40,40,40,40,40,41,41,41,41,41,41,41,41,41,41,41,42,42,42,42,42,42,43,43,43,43,43,44,44,44,44,44,44,45,45,45,45,45,45,45,45,45,45,45,46,46,46,46,46,46,47,47,47,47,47,48,48,48,48,48,48,49,49,49,49,49,49,49,49,49,49,49,50,50,50,50,50,50,51,51,51,51,51,52,52,52,52,52,52,53,53,53,53,53,53,53,53,53,53,53,54,54,54,54,54,54,55,55,55,55,55,56,56,56,56,56,56,57};

int main(){
    int i,j,k,l;
    int m,n;
    
    cin>>n;n-=2015;
    
    printf("%d\n",(n/400)*memo[399]+memo[n%400]);

    return 0;
}