#include <iostream>
#include <math.h>
using namespace std;
int main() {
  float o ,s ,d = 0 ;
  int a;
  cin >> o;
  a = o;
  s = sqrt(o);
  for(int t = 3 ; t < s ; t = t + 2){
    if(a % 2 == 0){
      d = 1;
      break;
    }
    d = 0;
    if(a % t != 0){
      continue;
    }else if (a % t == 0){
      d = 1;
      break;
    }
  }
  if(d == 1){
    cout << "«D½è¼Æ";
  }else{
    cout << "½è¼Æ";
  }
  cout << '\n';
  }