#include"bits/stdc++.h"

using namespace std;

bool check(int x) {
	if(x % 4 == 0 && x % 100 != 0) return 1;
	else if(x % 400 == 0) return 1;
	else return 0;
}

int ans[3000];

int make(int year, int month) {
	if(month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) return 31;
	else if(month == 2) return check(year) ? 29 : 28;
	else return 30;
}

void solve() {
	int n;
	cin >> n;
	int st = 7;
	for(int i = 2023; i <= 2037; i++) {
		for(int j = 1; j <= 12; j++) {
			if(st != 1) ans[i]++;
			int d = make(i, j);
			for(int k = 1; k <= d; k++) {
				ans[i] += st == 1;
				st++;
				if(st == 8) st = 1;
			}
		}
	}
	st = 6;
	for(int i = 2022; i >= 1970; i--) {
		for(int j = 12; j >= 1; j--) {
			if(st != 7) ans[i]++;
			int d = make(i, j);
			for(int k = d; k >= 1; k--) {
				ans[i] += st == 7;
				st--;
				if(st == 0) st = 7;
			}
		}
	}
	cout << ans[n] << "\n";
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
	solve();
	return 0;
}