#include <iostream>
using namespace std;
/*
Declarăm și citim variabila “n”.
Declarăm o variabila cu rol de contor initializata cu valoarea zero.
Cu o strucura repetitiva care ruleaza “n” pasi:
	Declarăm și citim numărul curent.
	Cu o structura decizionala verificăm dacă cifrele elementului curent sunt egale între ele și dacă acesta contine exact trei cifre. 
In caz afirmativ, incrementam variabila cu rol de contor.
La final, afisam variabila cu rol de contor.
*/
 
const int TEN = 10;
const int MAX_SIZE = 10;
 
int main() {
	int n, v[MAX_SIZE + 1];
	cin >> n;
	int countNumbers = 0;
	for (int i = 1; i <= n; ++i) {
		cin >> v[i];
		if (v[i] % TEN == v[i] / TEN % TEN && v[i] % TEN == v[i] / TEN / TEN) {
			++countNumbers;
		}
	}
	cout << countNumbers;
	return 0;
}

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CgoxMAoxMDAgMjAwIDMwMCA0MDAgNTAwIDYwMCA3MDAgODAwIDkwMCAxMDAKJnJhcnI7IDAK

10
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