func_code_string: #include <bits/stdc++.h>   using namespace std;   inline int read() {     int s = 0;     char c;     while ((c = getchar()) <  0  || c >  9 )       ;     do {       s = s * 10 + c -  0 ;     } while ((c = getchar()) >=  0  && c <=  9 );     return s;   }   bool descending(int a, int b) { return a > b; }   string toStr(char c) { return string(1, c); }   const int maxN = (int)1e2 + 10;   const int inf = (int)1e9;   int x;   int a[maxN];   long long dp[maxN];   vector<int> vl;   int main() {     int n;     cin >> n;     int cnt = 0;     for (int i = 0; i < (n); i++) {       cin >> x;       cnt += x;     }     cout << fixed << setprecision(12);     cout << cnt / double(n) << endl;   }   