P58459

#include <iostream>
using namespace std;

bool leap_year (int y) {

  bool leap = false;
  if (y%4 == 0 and y%100 != 0) leap = true;
  else if (y%100 == 0 and (y/100)%4 == 0) leap = true;
  //else;
  return leap;
}

bool is_valid_date(int d, int m, int y) {

  bool z = false;

  if ((m == 1 or m == 3 or m == 5 or m == 7 or m == 8 or m == 10 or m == 12) and (d > 0 and d <= 31)) z = true;
  else if (m == 2) {
    if (leap_year(y) == true) {
      if (d > 0 and d <= 29) z = true;
    }
    if (leap_year(y) == false) {
      if (d > 0 and d <= 28) z = true;
    }
  }
  else if (m > 0 and m < 12) {
    if (d <= 30 and d > 0) z = true;
  }
  //else;

  return z;

}

int main() {

  int d, m, y;
  cin >> d >> m >> y;
  if (is_valid_date(d, m, y) == true) cout << "true" << endl;
  else cout << "false" << endl;
}