func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int i, ans, n, a[3001];     while (cin >> n) {       for (i = 0; i < n; i++) {         cin >> a[i];       }       sort(a, a + n);       if (a[0] > 1)         ans = 1;       else {         for (i = 1; i < n; i++) {           if (a[i] - a[i - 1] > 1) {             ans = a[i - 1] + 1;             break;           }         }       }       if (ans <= 0) ans = a[n - 1] + 1;       cout << ans << endl;     }     return 0;   }   