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

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

return 0;

}