#include <set>
#include <map>
#include <list>
#include <queue>
#include <stack>
#include <cmath>
#include <ctime>
#include <cstdio>
#include <vector>
#include <string>
#include <bitset>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <utility>
#include <numeric>
#include <complex>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <cassert>
#include <iostream>
#include <iterator>
#include <algorithm>
#define int(x) int x; scanf("%d",&x);
#define lnt(x) long long x; scanf("%lld",&x);
#define dbl(x) double x; scanf("%lf",&x);
#define str(x) string x; cin >> x;
#define fo(i,a,b) for (int i=(a);i<(b);i++)
#define rf(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define rp(i,n) for (int i=0;i<(n);i++)
#define rrp(i,n) for (int i=(n)-1;i>=0;i--)
#define inf INT_MAX/3
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define pcc pair<char,char>
#define pci pair<char,int>
#define vs vector<string>
#define vi vector<int>
#define ll long long
#define inx(x) cin>>x;
#define ot(x) cout<<x;
#define eot(x) cout<<x<<endl;
#define sot(x) cout<<x<<" ";
using namespace std;
int main(){
	lnt(N)
	long long int ans=316;
	ans+=(N-1)*52;
	eot(ans)

return 0;
}