#include <bits/stdc++.h>

int mo[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

void solve () {
    int y;
    std::cin >> y;

    auto check = [&] (int year) -> bool {
        return year % 400 == 0 || (year % 4 == 0 && year % 100 != 0);
    };

    int st = 0, y1 = 2023;
    if(y > y1) {
        while(y1 != y) {
            if(check(y1)) st = (st + 366) % 7;
            else st = (st + 365) % 7;
            y1++;
        }
    }else if(y < y1){
        while(y1 != y) {
            if(check(y1 - 1)) st = (st - 366) % 7;
            else st = (st - 365) % 7;
            st = (st + 7) % 7;
            y1--;
        }
    }

    if(check(y)) mo[2] = 29;
    else mo[2] = 28;

    int ans = 0;
    for(int i = 1; i <= 12; i++) {
        int sum = mo[i];
        if(st == 0) sum += 6;
        else sum += st - 1;
        ans += (sum + 6) / 7;
        st = (sum + 1) % 7;
    }

    // std::cout << st;
    std::cout << ans << '\n';
}

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int t = 1;
    // std::cin >> t;
    for(int i = 0; i < t; ++i) {
        solve();
    }

    return 0;
}