#include <bits/stdc++.h>

using i64 = long long;

const int d[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

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

int daysInMonth(int y, int m) {
    return d[m - 1] + (isLeap(y) && m == 2);
}

int getDay(int y, int m, int d) {
    int ans = 0;
    for (int i = 1970; i < y; i++) {
        ans += 365 + isLeap(i);
    }
    for (int i = 1; i < m; i++) {
        ans += daysInMonth(y, i);
    }
    ans += d;
    return (ans + 2) % 7 + 1;
}

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    int y;
    std::cin >> y;
    
    // std::cout << getDay(2023, 1, 1) << "\n";
    
    int x = getDay(y, 1, 1);
    int ans = 0;
    for (int m = 1; m <= 12; m++) {
        int t = daysInMonth(y, m);
        for (int d = 1; d <= t; d++) {
            ans += (d == 1 || x == 1);
            x = x % 7 + 1;
        }
    }
    std::cout << ans << "\n";
    
    return 0;
}