#include <iostream>
using namespace std;
int main(){
int n , x;
cin >> n;
int rez = 0
for(int i = 1 ; i <= n; i++){
cin >> x;
int prim = 1;
if(x<2)
prim = 0;
if(x % 2 == 0 && x > 2)
prim = 0;
for(int d = 3; d * d <= x && prim == 1; d++)
if(x % d == 0)
prim = 0;
if(prim ==1){
int y = x;
int s = 0;
while(x)
s + = x % 10, x /= 10;
if(s<2)
prim = 0;
if(s % 2 == 0 && s > 2)
prim = 0;
for(int d = 3; d*d <= s && prim == 1 ; d++)
}
}
count <<rez;
return 0;
}