#include <bits/stdc++.h>

#define rep(i,s,n) for(int i = int(s); i < int(n); i++)
#define rrep(i,s,n) for(int i = int(n) - 1; i >= int(s); i--)
#define all(v) (v).begin(), (v).end()

using ll = long long;
using ull = unsigned long long;
using ld = long double;

template<class T>
bool chmin(T &a, T b) {
    if(a <= b) return false;
    a = b;
    return true;
}

template<class T>
bool chmax(T &a, T b) {
    if(a >= b) return false;
    a = b;
    return true;
}

int main() {
    int y;
    std::cin >> y;
    std::vector<int> days(13,31);
    days[2] = 28;
    days[4] = days[6] = days[9] = days[11] = 30;
    if(y % 400 == 0 || (y % 4 == 0 && y % 100 != 0)) {
        days[2] = 29;
    }
    auto zeller = [](int year, int month, int day) -> int {
        if(month <= 2) {
            year--;
            month += 12;
        }
        int Y = year % 100;
        int c = year / 100;
        int r = 5 * c + c / 4;
        int h = day + 26 * (month + 1) / 10 + Y + Y / 4 + r + 5;
        h %= 7;
        return h;
    };
    int ans = 0;
    int now = zeller(y, 1, 1);
    rep(i,1,13) {
        rep(j,0,days[i]) {
            now++;
            if(now == 7) {
                now -= 7;
                ans++;
            }
        }
        if(now != 0) ans++;
    }
    std::cout << ans << '\n';
}