#include <stdio.h>

int main(void)
{
	int nArray[5], nCount, nInput, nSum;
	double dAverage;
	
	for(nCount=0;nCount<5;)	{
		scanf("%d", &nInput);
		if(0 < nInput)	{
			nArray[nCount] = nInput;
			nCount++;
		}
	}
	
	for(nCount=0,nSum=0;nCount<5;nCount++)	{
		nSum += nArray[nCount];
	}
	dAverage = (double)nSum / 5;
	printf("nSum:%d\n", nSum);
	printf("nAverage:%.1f\n", dAverage);

	return 0;
}