func_code_string: #include <bits/stdc++.h>   using namespace std;   long long n, pos, kol;   long long a[1000];   int main() {     cin >> n;     for (long long i = 1; i <= 2 * n; ++i) cin >> a[i];     for (long long i = 1; i < 2 * n; ++i) {       for (long long j = i + 1; j <= 2 * n; ++j) {         if (a[i] == a[j]) {           pos = j;           break;         }       }       while (pos > i + 1) {         swap(a[pos - 1], a[pos]);         --pos;         ++kol;       }     }     cout << kol << endl;   }   