#include <stdio.h>
int main(void)
{
	int a, b, c, sum;
	double avg;

	printf("Á¤¼ö¸¦ ÀÔ·ÂÇϼ¼¿ä.\n");
	scanf("%d", &a);

	printf("Á¤¼ö¸¦ ÀÔ·ÂÇϼ¼¿ä.\n");
	scanf("%d", &b);

	printf("Á¤¼ö¸¦ ÀÔ·ÂÇϼ¼¿ä.\n");
	scanf("%d", &c);


	sum = a + b + c;
	avg = sum / 3;

	printf("ÇÕ°è´Â : %d", sum);
	printf("Æò±ÕÀº : %2.lf", avg);

	return 0;

}