#include <stdio.h>

// #define uint unsigned int
// 
// typedef
//   unsigned int
// uint_t;

unsigned int get(unsigned int x, int i);

int main(int argc, char *argv[])
{
  unsigned int x;
  scanf("%u", &x);
  // The least significant bit tells the parity of x
  if(get(x, 0) == 1) {
    printf("odd\n");
  } else {
    printf("even\n");
  }
  return 0;
}

unsigned int get(unsigned int x, int i)
{
  unsigned int m = 1 << i;
  if((x & m)) {
    // there is a one here
    return 1;
  } else {
    // there is 0 here
    return 0;
  }
}