#include<stdio.h>
int main()
{
int x;
double sum = 0;
int cnt = 0;
int number[100];
scanf("%d", &x);
getchar();
while ( x!=-1){
number[cnt] = x;
sum += x;
cnt ++;
scanf("%d", &x);
getchar();
}
if( cnt>0){
printf("%f\n", sum/cnt);
int i;
for ( i=0; i<cnt; i++){
if ( number[i] > sum/cnt){
printf("%d\n", number[i]);
}
}
}
return 0;
}