func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<long long int> v, v1, v2;   multiset<long long int> mss;   multiset<long long int>::iterator it;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     long long int a, b, c, d, i, j, z = 0, k, w = 1, q = 0, cnt = 0, x = 0, p = 0;     cin >> a >> c;     for (i = 0; i < a; i++) {       cin >> b;       v.push_back(b);     }     sort(v.begin(), v.end());     for (i = 0; i < a / 2; i++) {       v1.push_back(v[i]);     }     for (j = i; j < a; j++) {       mss.insert(v[j]);     }     for (i = 0; i < v1.size(); i++) {       d = v1[i] + c;       it = mss.lower_bound(d);       if (it == mss.end()) {         break;       }       cnt++;       mss.erase(it);     }     cout << cnt;     return 0;   }   