#include<bits/stdc++.h>
using namespace std;
#define V vector
#define pb push_back

bool sp_year(int x) {
    if(x % 4 == 0) return 1;
    return 0;
}

int get_len_of_year(int x) {
    if(sp_year(x)) return 366;
    return 365;
}

int st_of_year(int x) {
    //1970 -> 3
    int now = 1970, cur = 3;
    while(now != x) {
        cur += get_len_of_year(now);
        cur %= 7;
        now++;
    }
    return cur;
}

int get_len_of_month(int y, int m) {
    if(m != 2) {
        if(m <= 7 && (m % 2 == 1) || m >= 8 && (m % 2 == 0)) {
            return 31;
        } else return 30;
    } 
    if(sp_year(y)) return 29;
    return 28;
}

int get_row(int days, int st) {
    int ans = (st != 0);
    while(days) {
        if(st == 0) ans++;
        st++;
        st %= 7;
        days--;
    }
    return ans;
}

int main() {
    int n; cin >> n;
    int ans = 0;
    int cur = st_of_year(n);
    for(int i = 1; i <= 12; i++) {
        ans += get_row(get_len_of_month(n, i), cur);
        cur += get_len_of_month(n, i);
        cur %= 7;
    }
    cout << ans << endl;
}