#include <bits/stdc++.h> using namespace std;

int main() { int n; cin >> n; int sum = 0, x; for (int i = 1; i <= n; i++) { cin >> x; sum += x; } double ans; if (sum <= 100) ans = sum; else ans = 100 + (sum - 100) * 0.9; cout << fixed << setprecision(2) << ans; return 0; }