#include <iostream>
using namespace std;
int main(){
long long n;
cin >> n;
long long s=0;
for (int i=1; i<=n; i++){
cin >> n;
if (n < 1000000000) {
continue;
bool check= true ;
s++;
}
cout << s;
}
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwppbnQgbWFpbigpewoJbG9uZyBsb25nIG47CiAgICBjaW4gPj4gbjsKICAgIGxvbmcgbG9uZyBzPTA7CiAgICBmb3IgKGludCBpPTE7IGk8PW47IGkrKyl7CiAgICAgICAgY2luID4+IG47CiAgICAgICAgaWYgKG4gPCAxMDAwMDAwMDAwKSB7CiAgICAgICAgICAgIGNvbnRpbnVlOyAgCiAgICAgICAgYm9vbCBjaGVjaz0gdHJ1ZSA7CiAgICAgICAgCiAgICAgICAgcysrOwogICAgICAgIH0KICAgICAgIGNvdXQgPDwgczsKICAgICAgIH0gICAgCiAgCiAgICB9