#!/usr/local/bin/tcc -run
#include <stdio.h>
int main(void){

int x[10] = {12,19,21,34,26,17,32,29,11,20};
int a,S,A,Sh,B;

for(a = 0;a < 10;a++){
	S =S + x[a];
}
A = S / 10.0;
printf("%d\n",A);


for(a = 0;a < 10;a++){
	Sh += ( x[a] - A ) * ( x[a] - A );
}
B = Sh / 10.0;
printf("%d\n",B);

	return 0;
}