#include <bits/stdc++.h>
#define SZ(x) (int) x.size() - 1
#define all(x) x.begin(), x.end()
#define ms(x, y) memset(x, y, sizeof x)
#define F(i, x, y) for (int i = (x); i <= (y); i++)
#define DF(i, x, y) for (int i = (x); i >= (y); i--)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
template <typename T> inline void chkmax(T& x, T y) { x = max(x, y); }
template <typename T> inline void chkmin(T& x, T y) { x = min(x, y); }
template <typename T> inline void read(T &x) {
	x = 0; int f = 1; char c = getchar();
	for (; !isdigit(c); c = getchar()) if (c == '-') f = -f;
	for (; isdigit(c); c = getchar()) x = (x << 1) + (x << 3) + (c ^ 48);
	x *= f;
}
int t = 6;
signed main() {
	int y; cin >> y;
	int x = 2023;
	while (x < y) {
		if ((x % 4 == 0 && x % 100) || x % 400 == 0) t = (t + 366) % 7;
		else t = (t + 365) % 7;
		x++;
	}
	while (x > y) {
		x--;
		if ((x % 4 == 0 && x % 100) || x % 400 == 0) t = (t - 366 + 700) % 7;
		else t = (t - 365 + 700) % 7;
	}
	// cout << x << " " << t << endl;
	int s = 0;
	F(i, 1, 12) {
		if (i == 1 || i == 3 || i == 5 || i == 7 || i == 8 || i == 10 || i == 12) {
			s += (t + 31 - 1) / 7 + 1;
			t = (t + 31) % 7;
		} else if (i == 2) {
			if ((x % 4 == 0 && x % 100) || x % 400 == 0) {
				s += (t + 29 - 1) / 7 + 1;
				t = (t + 29) % 7;
			} else {
				s += (t + 28 - 1) / 7 + 1;
				t = (t + 28) % 7;
			}
		} else {
			s += (t + 30 - 1) / 7 + 1;
			t = (t + 30) % 7;
		}
		// cout << i << " " << s << " " << t << endl;
	} cout << s;
	return 0;
}