#include<iostream> #include<cstdio> #include<cstring> #include<string> #include<cctype> #include<cstdlib> #include<algorithm> #include<bitset> #include<vector> #include<list> #include<deque> #include<queue> #include<map> #include<set> #include<stack> #include<cmath> #include<sstream> #include<fstream> #include<iomanip> #include<ctime> #include<complex> #include<functional> #include<climits> #include<cassert> #include<iterator> #include<valarray> //#include<bits/stdc++.h> //using namespace std; using namespace std; int main(){ int n; scanf("%d", &n); vector<long long int> v; long long int sum = 0; for (int i = 0; i < n; i++){ long long int a; scanf("%lld", &a); v.push_back(a); sum += a; } sum /= 10LL; sum++; long long int ans = 0; for (int i = 0; i < n; i++){ if (v[i] < sum){ ans += 30LL; } } printf("%lld\n", ans); return 0; }