#include<bits/stdc++.h> using namespace std; #define rep(i,a,b) for(int i=a;i<b;i++) int N; int C[100]; //----------------------------------------------------------------- int main() { cin >> N; rep(i, 0, N) scanf("%d", &C[i]); int sum = 0; rep(i, 0, N) sum += C[i]; int ans = 0; rep(i, 0, N) if (C[i] * 10 <= sum) ans += 30; cout << ans << endl; }