output_description: If we have x hours until New Year at M o'clock on 30th, December, print x.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      M
attempt: #include <bits/stdc++.h>
  using namespace std;
  using ll = long long;
  using ld = long double;
  using VI = vector<int>;
  using VL = vector<ll>;
  using VS = vector<string>;
  template<class T> using PQ = priority_queue<T, vector<T>, greater<T>>;
  #define FOR(i,a,n) for(int i=(a);i<(n);++i)
  #define eFOR(i,a,n) for(int i=(a);i<=(n);++i)
  #define rFOR(i,a,n) for(int i=(n)-1;i>=(a);--i)
  #define erFOR(i,a,n) for(int i=(n);i>=(a);--i)
  #define each(i, a) for(auto &i : a)
  #define SORT(a) sort(a.begin(),a.end())
  #define rSORT(a) sort(a.rbegin(),a.rend())
  #define fSORT(a,f) sort(a.begin(),a.end(),f)
  #define all(a) a.begin(),a.end()
  #define out(y,x) ((y)<0||h<=(y)||(x)<0||w<=(x))
  #define tp(a,i) get<i>(a)
  #define line cout << "-----------------------------\n" 
  #define ENDL(i,n) ((i) == (n) - 1 ? "\n" : " ")
  #define stop system("pause")
  constexpr ll INF = 1000000000;
  constexpr ll LLINF = 1LL << 60;
  constexpr ll mod = 1000000007;
  constexpr ll MOD = 998244353;
  constexpr ld eps = 1e-10;
  constexpr ld pi = 3.1415926535897932;
  template<class T>inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; }return false; }
  template<class T>inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; }return false; }
  inline void init() { cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); }
  template<class T>inline istream& operator>>(istream& is, vector<T>& v) { for (auto& a : v)is >> a; return is; }
  template<class T>inline istream& operator>>(istream& is, deque<T>& v) { for (auto& a : v)is >> a; return is; }
  template<class T, class U>inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
  template<class T>inline vector<T> vec(size_t a) { return vector<T>(a); }
  template<class T>inline vector<T> defvec(T def, size_t a) { return vector<T>(a, def); }
  template<class T, class... Ts>inline auto vec(size_t a, Ts... ts) { return vector<decltype(vec<T>(ts...))>(a, vec<T>(ts...)); }
  template<class T, class... Ts>inline auto defvec(T def, size_t a, Ts... ts) { return vector<decltype(defvec<T>(def, ts...))>(a, defvec<T>(def, ts...)); }
  template<class T>inline void print(const T& a) { cout << a << "\n"; }
  template<class T, class... Ts>inline void print(const T& a, const Ts&... ts) { cout << a << " "; print(ts...); }
  template<class T>inline void print(const vector<T>& v) { for (int i = 0; i < v.size(); ++i)cout << v[i] << (i == v.size() - 1 ? "\n" : " "); }
  template<class T>inline void print(const vector<vector<T>>& v) { for (auto& a : v)print(a); }
  inline string reversed(const string& s) { string t = s; reverse(all(t)); return t; }
  
  int main() {
      init();
  
      int m; cin >> m;
      print(24 - m + 24);
  
      return 0;
  }
problem_description: Statement
  
  How many hours do we have until New Year at M o'clock (24-hour notation) on
  30th, December?
samples: [{"input": "21", "output": "27\n    \n\nWe have 27 hours until New Year at 21 o'clock on 30th, December.\n\n* * *"}, {"input": "12", "output": "36"}]