#include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef long long ll; typedef pair pint; typedef vector vint; typedef vector vpint; #define mp make_pair #define fi first #define se second #define all(v) (v).begin(),(v).end() #define rep(i,n) for(int i=0;i<(n);i++) #define REP(i,n) for (int i=(n)-1;i>=0;i--) #define reps(i,f,n) for(int i=(f);i<(n);i++) #define REPS(i,f,n) for (int i=(f)-1;i>=(n);i--) int dx[4] = {1, 0, 0, -1}; int dy[4] = {0, 1, -1, 0}; int main(void){ int n; cin >> n; ll now = 316; rep(i, n - 1) now += 52; printf("%lld\n", now); return 0; }