/* 是否闰年.cpp */
#include <iostream>
using namespace std;
int main(int argc, char const *argv[]) {
  int year;
  bool isLeapYear;
  cout << "Enter the year: ";
  cin >> year;
  isLeapYear = (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0));
  if (isLeapYear) {
    cout << year << " is a leap year" << endl;
  } else {
    cout << year << " is not a leap year" << endl;
  }
  
  return 0;
}