#include <iostream>
#include <string>
using namespace std;

int main ()
{
  string line;
  int lineNum = 0;
  while (cin.good() && (line != "***"))
	{
	  getline(cin, line);
	  ++lineNum;
	  if (line.size() > 80)
		{
		  cerr << "Overly long line " << lineNum << endl;
		  return -1;
		}
	}
  if (line != "***")
	{
	  cerr << "Did not end with *** " << lineNum << endl;
	  return -1;
	}
  getline(cin, line);
  if (cin.good()) {
	  cerr << "Extra input at " << lineNum << endl;
	return -1;
  }
  if (lineNum == 0 || lineNum > 101)
	{
	  cerr << "Line number violation: " << lineNum << endl;
	  return -1;
	}
  return 42;
}