#define _USE_MATH_DEFINES //M_PI(π),M_SQRT2(√2) #include <iostream> //std::cout, std::cin #include <string> //std::string #include <vector> //std::vector #include <valarray> //std::valarray #include <algorithm> //std::sort #include <time.h> //localtime_s #include <cstdlib> //abs #include <cmath> //abs,std::pow,sqrt,sin,cos,round,floor,ceil #include <fstream> //std::ifstream #include <iomanip> //std::setprecision #include <random> //std::random(C++11) #include <numeric> //std::accumulate int main(void) { //test用 //std::ifstream in("test.txt"); //std::cin.rdbuf(in.rdbuf()); //const unsigned int MODULO = 1000000007; //MODULO 10^9+7用 int N; std::cin >> N; std::vector<int> C(N); int total = 0; for (int i = 0; i < N; i++) { std::cin >> C[i]; total += C[i]; } double thr = total / 10; int ans = 0; for (int i = 0; i < N; i++) { if (C[i] <= thr) { ans += 30; } } std::cout << ans << std::endl; }