#include <stdio.h>

int 
main() {
	int saysay,say,topsay;

	printf("Kac sayi gireceksin: ");
	scanf("%d",&saysay);

	for (int i = 1; i <= saysay; i++){
		scanf("%d",&say);

		if ( say % 2 == 1) 
			topsay += say;

	}

	printf("%d\n",topsay);
}