#include <cstdio> #include <cstdlib> #include <iostream> #include <string> #include <cmath> #include <algorithm> #include <vector> #include <queue> #include <stack> #include <map> #include <set> #include <cstring> typedef long long ll; using namespace std; #define mod 1000000007 #define INF 1000000000 //(int)1e9 #define LLINF 2000000000000000000 //(ll)2e18 #define PI 3.1415926536 #define SIZE 1000 int main(){ int n; int c[SIZE]; int sum=0; int ans=0; cin >> n; for(int i=0;i<n;i++){ scanf("%d",&c[i]); sum+=c[i]; c[i]*=10; } for(int i=0;i<n;i++){ if(sum>=c[i]) ans+=30; } cout << ans << endl; return 0; }