#include<set> using namespace std; #include<iostream> int main(){ int N, C, c[100], n; cin >> N; C = 0; n = 0; for (int i = 0; i <N; i++ ){ cin >> c[i]; C+= c[i]; } for (int i = 0; i <N; i++ ){ if (c[i] <= 0.1*C){ n+= 30; } } cout << n << endl; }