#include <stdio.h>

int main(void) {
	int n,i=1,j=0,a;
	scanf("%d",&n);
	do {
		n=n/10;
		j=j+1;
	} while(a!=0);
	
	do {
		a = (n%i)-(n%(i*10));
		i = i*10;
		j = j-1;
		if(a%2!=0){
			printf("奇数");
		} else {
			printf("偶数");
		}
	} while (j!=0);
	return 0;
}