
# include <iostream>
int main() {
short n;
std::cin >> n;
bool minSpeed = false;
short maxSpeed = INT8_MIN;
short buf;
for (short j = 0; j < n; j++) {
std::cin >> buf;
if (not minSpeed and buf < 30) minSpeed = true;
if (buf > maxSpeed) maxSpeed = buf;
}
std::cout << maxSpeed << "\n" << ((minSpeed) ? "YES" : "NO");
};