#include <cstdio>
#include <cstdlib>

#include <stdint.h>

typedef uint8_t  u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
typedef int8_t   s8;
typedef int16_t  s16;
typedef int32_t  s32;
typedef int64_t  s64;

const int INF = (1 << 28);
const long INFL = (1LL << 50);

class FastIO {
public:
  void flush() {
    fflush(stdin);
    fflush(stdout);
  }
  FastIO& operator >> (int &right) {
    if( scanf("%d", &right) == EOF ) {
      fprintf(stderr, "cannot scanf().");
      exit(1);
    }
    return *this;
  }
  FastIO& operator >> (u64 &right) {
    if( scanf("%ld", &right) == EOF ) {
      fprintf(stderr, "cannot scanf().");
      exit(1);
    }
    return *this;
  }
  FastIO& operator >> (u32 &right) {
    if( scanf("%d", &right) == EOF ) {
      fprintf(stderr, "cannot scanf().");
      exit(1);
    }
    return *this;
  }
  FastIO& operator >> (double &right) {
    if( scanf("%lf", &right) == EOF ) {
      fprintf(stderr, "cannot scanf().");
      exit(1);
    }
    return *this;
  }
  FastIO& operator >> (char &right) {
    if( scanf("%c", &right) == EOF ) {
      fprintf(stderr, "cannot scanf().");
      exit(1);
    }     
    return *this;
  }
  FastIO& operator >> (char right[]) {
    if( scanf("%s", right) == EOF ) {
      fprintf(stderr, "cannot scanf().");
      exit(1);
    }           
    return *this;
  }
  
  FastIO& operator << (const int& right) {
    printf("%d", right);
    return *this;
  }
  FastIO& operator << (int&& right) {
    printf("%d", right);
    return *this;
  }
  FastIO& operator << (const u32& right) {
    printf("%d", right);
    return *this;
  }
  FastIO& operator << (u32&& right) {
    printf("%d", right);
    return *this;
  }
  FastIO& operator << (const u64& right) {
    printf("%ld", right);
    return *this;
  }
  FastIO& operator << (u64&& right) {
    printf("%ld", right);
    return *this;
  }
  FastIO& operator << (const long& right) {
    printf("%ld", right);
    return *this;
  }
  FastIO& operator << (long&& right) {
    printf("%ld", right);
    return *this;
  }

  FastIO& operator << (const double& right) {
    printf("%.20lf", right);
    return *this;
  }
  FastIO& operator << (double&& right) {
    printf("%.20lf", right);
    return *this;
  }

  FastIO& operator << (const char right[]) {
    printf("%s", right);
    return *this;
  }
  
  FastIO& operator << (const char& right) {
    printf("%c", right);
    return *this;
  }
  FastIO& operator << (char&& right) {
    printf("%c", right);
    return *this;
  }
};

FastIO io;

class Solver {
private:
public:
  void solve() {
    u64 N;
    io >> N << 316 + (N - 1) * 52 << '\n';
  }
};

int main() {

  Solver solver;
  solver.solve();

  return 0;
}