#include #define rep(i, x) for(ll i = 0; i < x; i++) #define rep2(i, x) for(ll i = 1; i <= x; i++) #define all(a) (a).begin(),(a).end() using ll = long long; using ld = long double; using namespace std; signed main() { ll n; cin >> n; cout << 10 * n << endl; return 0; }