func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, a[10005], sum1 = 0, sum2 = 0;   int main() {     cin >> n;     for (int i = 1; i <= n; i++) {       cin >> a[i];       if (a[i] < 0)         sum2++;       else {         if (a[i] == 0)           sum1++;         else           cout << a[i] <<    ;       }     }     sort(a + 1, a + n + 1);     if (sum2 % 2 == 0) {       for (int i = 1; i <= sum2; i++) {         cout << a[i] <<    ;       }     } else {       for (int i = 1; i <= sum2 - 1; i++) {         cout << a[i] <<    ;       }     }     if (n == 1 && a[1] <= 0) {       cout << a[1];       return 0;     }     if (sum1 == n) cout << 0;     if (sum1 + sum2 == n && sum2 == 1) cout << 0;     return 0;   }   