func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 105;   const double eps = 1e-6;   int n, k, q, m;   int a[N], b[N], used[N];   double MinAns = 100.0, MaxAns = 0.0;   double max(double x, double y) { return x - eps >= y ? x : y; }   double min(double x, double y) { return x + eps <= y ? x : y; }   void init() {     scanf( %d %d , &n, &k);     m = n / k;     for (int i = 1; i <= n; i++) scanf( %d , &a[i]);   }   void work() {     int x, sum, cnt;     scanf( %d , &q);     for (int i = 1; i <= q; i++) {       sum = 0;       for (int j = 1; j <= m; j++) {         scanf( %d , &x);         used[x] = 1;         sum += a[x];       }       MinAns = min(MinAns, 1.0 * sum / m);       MaxAns = max(MaxAns, 1.0 * sum / m);     }     cnt = 0;     for (int i = 1; i <= n; i++)       if (!used[i]) b[++cnt] = a[i];     sort(b + 1, b + 1 + cnt);     if (cnt >= m && n - cnt < k * m) {       sum = 0;       for (int i = 1; i <= m; i++) sum += b[i];       MinAns = min(MinAns, 1.0 * sum / m);       sum = 0;       for (int i = cnt; i > cnt - m; i--) sum += b[i];       MaxAns = max(MaxAns, 1.0 * sum / m);     }     printf( %.10lf %.10lf n , MinAns, MaxAns);   }   int main() {     init();     work();     return 0;   }   