#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  int b[200005];
  vector<int> a;
  cin >> n;
  a.push_back(31);
  a.push_back(28);
  a.push_back(31);
  a.push_back(30);
  a.push_back(31);
  a.push_back(30);
  a.push_back(31);
  a.push_back(31);
  a.push_back(30);
  a.push_back(31);
  a.push_back(30);
  a.push_back(31);
  for (int i = 0; i < n; i++) {
    cin >> b[i];
  }
  for (int i = 0; i < 12; i++) {
    int count = 0, f = 0;
    for (int j = 0; j < n; j++) {
      if ((i + j) % 12 == 1) {
        if (a[(i + j) % 12] == b[j])
          continue;
        else {
          if (a[(i + j) % 12] == 28 && b[j] == 29 && count == 0) {
            count = 1;
            continue;
          }
        }
      }
      if (a[(i + j) % 12] != b[j]) {
        f = 1;
        break;
      }
    }
    if (f == 0) {
      cout << "YES" << endl;
      return 0;
    }
  }
  cout << "NO" << endl;
  return 0;
}
