#include<bits/stdc++.h>
using namespace std;

const int sty = 1970, st = 3, days[12] = {31,28,31,30,31,30,31,31,30,31,30,31};

bool leap(int x){
    return x%400==0 || (x%4==0 && x%100!=0);
}

void solve(int t){
    int n;
    cin>>n;
    
    int day = st;
    for(int i=sty;i<n;i++){
        day += 365;
        day += leap(i);
    }
    day %= 7;
    
    int ans=0;
    for(int i=0;i<12;i++){
        int num = days[i] + (i==1 && leap(n));
        ans += (day+num-1)/7+1;
        day = (day+num)%7;
    }
    cout<<ans<<"\n";
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    
    int t=1;
    //cin>>t;
    for(int i=1;i<=t;i++)solve(i);
    
    return 0;
}