#include <bits/stdc++.h> //#include <boost/multiprecision/cpp_int.hpp> using namespace std; //using Graph = vector<vector<edge>>; using dou =long double; string yes="yes"; string Yes="Yes"; string YES="YES"; string no="no"; string No="No"; string NO="NO"; template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; } template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; } typedef long long ll; typedef pair<int,int> P; typedef pair<ll,ll> PL; const ll mod = 1000000007; //const ll mod = 998244353; struct mint { ll x; // typedef long long ll; mint(ll x=0):x((x%mod+mod)%mod){} mint operator-() const { return mint(-x);} mint& operator+=(const mint a) { if ((x += a.x) >= mod) x -= mod; return *this; } mint& operator-=(const mint a) { if ((x += mod-a.x) >= mod) x -= mod; return *this; } mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this;} mint operator+(const mint a) const { return mint(*this) += a;} mint operator-(const mint a) const { return mint(*this) -= a;} mint operator*(const mint a) const { return mint(*this) *= a;} mint pow(ll t) const { if (!t) return 1; mint a = pow(t>>1); a *= a; if (t&1) a *= *this; return a; } // for prime mod mint inv() const { return pow(mod-2);} mint& operator/=(const mint a) { return *this *= a.inv();} mint operator/(const mint a) const { return mint(*this) /= a;} }; istream& operator>>(istream& is, const mint& a) { return is >> a.x;} ostream& operator<<(ostream& os, const mint& a) { return os << a.x;} #define rep(i, n) for(int i = 0; i < (int)(n); i++) #define brep(n) for(int bit=0;bit<(1<<n);bit++) #define erep(i,container) for (auto &i : container) #define irep(i, n) for(int i = n-1; i >= (int)0; i--) #define rrep(i,m,n) for(ll i = m; i < (ll)(n); i++) #define reprep(i,j,h,w) rep(i,h)rep(j,w) #define all(x) (x).begin(),(x).end() #define VEC(type,name,n) std::vector<type> name(n);rep(i,n)std::cin >> name[i]; #define pb push_back #define pf push_front #define query int qq;std::cin >> qq;rep(qqq,qq) #define lb lower_bound #define ub upper_bound #define fi first #define se second #define itn int #define mp make_pair #define sum(a) accumulate(all(a),0ll) #define keta fixed<<setprecision #define vout(a) erep(qxqxqx,a)std::cout << qxqxqx << ' ';std::cout << std::endl; #define vvector(name,typ,m,n,a)vector<vector<typ> > name(m,vector<typ> (n,a)) //#define vvector(name,typ,m,n)vector<vector<typ> > name(m,vector<typ> (n)) #define vvvector(name,t,l,m,n,a) vector<vector<vector<t> > > name(l, vector<vector<t> >(m, vector<t>(n,a))); #define vvvvector(name,t,k,l,m,n,a) vector<vector<vector<vector<t> > > > name(k,vector<vector<vector<t> > >(l, vector<vector<t> >(m, vector<t>(n,a)) )); #define case std::cout <<"Case #" <<qqq+1<<": " #define res resize #define as assign #define ffor for(;;) #define ppri(a,b) std::cout << a<<" "<<b << std::endl #define pppri(a,b,c) std::cout << a<<" "<<b <<" "<< c<<std::endl #define aall(x,n) (x).begin(),(x).begin()+(n) #define ssum(a) accumulate(a,0ll) //typedef long long T; ll ceil(ll a,ll b){ return ((a+b-1)/b); } const int INF = 2000000000; const ll INF64 =3223372036854775807ll; //const ll INF64 = 9223372036854775807ll; //const ll INF64 = 9223372036854775ll; const ll MOD = 1000000007ll; const dou pi=3.141592653589793; //mapは、if関数などで覗いただけで構成されるので注意しよう! //std::vector<vector<int>> g; //tuple<hoge,huga,foo> tのget関数はget<i>(t) int main(){ ll n; std::cin >> n; std::cout << 316+52*(n-1) << std::endl; }