" Life is not a problem to be solved but a reality to be experienced! "
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using namespace std;
bool t[40];
int main() {
int wynik = 0;
for (int i = 0; i < 15; i++) {
int x;
cin >> x;
if (!t[x % 37]) {
t[x % 37] = 1;
wynik++;
}
}
cout << wynik;
}