/*
 * @Date: 2023-04-26 00:30:57
 * @Description: 请填写简介
 */
#include <bits/stdc++.h>

using i64 = long long;

template<typename A, typename B> std::ostream& operator<<(std::ostream &os, const std::pair<A, B> &p) {
	return os << '(' << p.first << ", " << p.second << ')';
}
template<typename T_container, typename T = 
typename std::enable_if<!std::is_same<T_container, std::string>::value, typename T_container::value_type>::type> 
std::ostream& operator<<(std::ostream &os, const T_container &v) { 
	os << '{'; std::string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << '}';
}
void debug_out() { std::cerr << std::endl; }
template<typename Head, typename... Tail> void debug_out(Head H, Tail... T) { std::cerr << ' ' << H; debug_out(T...); }
#define debug(...) std::cerr << "(" << #__VA_ARGS__ << "):", debug_out(__VA_ARGS__)


int CaculateWeekDay(int y, int m, int d) {
	if (m == 1 || m == 2) {
		m += 12;
		y--;
	}
	int iWeek = (d + 2 * m + 3 * (m + 1) / 5 + y + y / 4 - y / 100 + y / 400) % 7 + 1;
	return iWeek;
}

void solve() {
	int y;
	std::cin >> y;
	int month[] = {-1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
	if((y % 400 == 0) || (y % 4 == 0 && y % 100 != 0)) month[2] ++;
	int ans = 0, now = CaculateWeekDay(y, 1, 1), m = 1, d = 1;
	while(m <= 12) {
		if(d + 1 <= month[m]) d ++;
		else {
			m ++;
			d = 1;
			ans ++;
			now = CaculateWeekDay(y, m, d) - 1;
		}
		now ++;
		if(now == 8) {
			ans ++;
			now = 1;
		}
	}
	std::cout << ans << "\n";
}

int main() {
	std::cin.tie(nullptr)->sync_with_stdio(false);
	int _ = 1; //std::cin >> _;
	while(_--) solve();
	return 0;
}