#include using namespace std; #define repl(i, l, r) for (ll i = (l); i < (r); i++) #define rep(i, n) repl(i, 0, n) #define CST(x) cout << fixed << setprecision(x) using ll = long long; const ll MOD = 1000000007; const int inf = 1e9 + 10; const ll INF = 4e18 + 10; const int dx[9] = {1, 0, -1, 0, 1, -1, -1, 1, 0}; const int dy[9] = {0, 1, 0, -1, 1, 1, -1, -1, 0}; int main() { cin.tie(0); cout.tie(0); ios::sync_with_stdio(false); int n; cin >> n; int ans = 0; rep(i, 21) { rep(j, i + 1) { rep(k, 34) { if (i * 5 + j * 2 + k * 3 == n) ans++; } } } cout << ans << endl; return 0; }