func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m, k;     scanf( %d , &n);     scanf( %d , &m);     scanf( %d , &k);     vector<int> v;     for (int(i) = 0; (i) < (int)(n); (i)++) {       int a;       scanf( %d , &a);       v.push_back(a);     }     sort((v).begin(), (v).end());     int num = m;     if (num <= k)       cout <<  0  << endl;     else {       int ans = 0;       for (int pos = v.size() - 1; pos >= 0; pos--) {         if (k >= m) break;         k = k + v[pos] - 1;         ans++;       }       if (k >= m)         cout << ans << endl;       else         cout <<  -1  << endl;     }   }   