#include <stdio.h>
int add(int a,int b);
int main()
{
int i,j,n,sum = 0;
int a[40][4];
int b[40];
scanf("%d",&n);
for(i = 0;i < n;i++){
int count = 0;
for(j = 0;j < 4;j++){
scanf("%d", &a[i][j]);
sum += a[i][j];
if(a[i][j] > 85) count ++;
if(count >= 2){
b[i] = 1;
}
}
}
printf("%.1f\n", sum / 4.0 / n);
for(i = 0;i < n;i++){
if(b[i] == 1){
for(j = 0;j < 4;j++){
printf("%d ", a[i][j]);
}
printf("\n");
}
}
return 0;
}