#include <stdio.h>

int main(void) {
  // Initialize variables
  int n;
  scanf("%d", &n);

  // Start looping
  int sum;
	int found = 0;
  for (int a = 0; found != 1; a++) {
    sum = a * 5 + 1;
    for (int b = 0; sum >= b * 6 + 5; b++) {
      if (sum != b * 6 + 5) { // The sum don't equal
        continue;
      }
      for (int c = 0; sum >= 7 * c + 6; c++) {
        if (sum != 7 * c + 6) {
          continue;
        }
        for (int d = 0; sum >= 11 * d + 10; d++) {
          if (sum != 11 * d + 10) {
            continue;
          }
          if (sum >= n) {
            printf("%i\n", sum);
						found = 1;
          }
        }
      }
    }
  }
  return 0;
}