#include<stdio.h>
int main()
{
	int n;
	scanf("%d",&n);
	int i,j,a[n][3];
	for(i=0;i<n;i++){
		for(j=0;j<3;j++){
			scanf("%d",&a[i][j]);
		}
	}
	
	for(j=0;j<3;j++){
		double t;
		int s=0;
		for(i=0;i<n;i++){
			s+=a[i][j];
			t=(double)s/n;
		
		} 
		printf("%.1f ",t);
			 
	} 
	return 0;
}
/**************************************************************
	Problem: 1274
	User: admin
	Language: C
	Result: Accepted
	Time:9 ms
	Memory:1144 kb
****************************************************************/