func_code_string: #include <bits/stdc++.h>   using namespace std;   inline void R(int &x) {     char ch = getchar();     x = 0;     for (; ch <  0 ; ch = getchar())       ;     for (; ch >=  0 ; ch = getchar()) x = x * 10 + ch -  0 ;   }   const int N = 100005;   double x, y, ans;   int n;   int main() {     scanf( %d , &n);     for (int i = 1; i <= n; ++i) {       scanf( %lf%lf , &x, &y);       ans += y;     }     printf( %.3lf n , ans / n + 5);     return 0;   }   