#include<iostream>
#include<cstdio>
#include<string>
#include<algorithm>
#include<vector>
#include<cstdlib>
#include<numeric>
#include<climits>
#include<map>
#define REP(i,m,n) for(int i = m; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define ALL(a)  (a).begin(),(a).end()
template<class T> void chmax(T& a, T b) { if (a < b) { a = b; } }
template<class T> void chmin(T& a, T b) { if (a > b) { a = b; } }
using namespace std;

int main(void) {
	int n;
	cin >> n;
	cout << n * 10 << endl;
}