#include using namespace std; #ifdef LOCAL_ void debug_out() {cerr << endl;} template void debug_out(Head H,Tail... T){cerr << ' ' << H; debug_out(T...);} #define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:",debug_out(__VA_ARGS__) #define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl; #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif #define rep(i,n) for (int i = 0; i < (int)(n); i ++) #define irep(i,n) for (int i = (int)(n) - 1;i >= 0;--i) using ll = long long; using PL = pair; using P = pair; constexpr int INF = 1000000000; constexpr long long HINF = 1000000000000000; constexpr long long MOD = 1000000007;// = 998244353; constexpr double EPS = 1e-4; constexpr double PI = 3.14159265358979; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int N; cin >> N; int ans = 0; rep(i,21) { rep(j,i + 1) { rep(k,35) { if (5*i + 2*j + 3*k == N) ++ans; } } } cout << ans << '\n'; return 0; }