func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int test, i, k, j, sum1, sum, n, p;     cin >> test;     for (i = 0; i < test; i++) {       cin >> n >> k;       sum = 0;       sum1 = 0;       vector<int> v1, v2;       for (j = 0; j < n; j++) {         cin >> p;         v1.push_back(p);       }       for (j = 0; j < n; j++) {         cin >> p;         v2.push_back(p);       }       sort(v1.begin(), v1.end());       sort(v2.begin(), v2.end());       for (j = 0; j < k; j++) {         if (v2[n - j - 1] > v1[j])           sum1 = sum1 + v2[n - j - 1];         else           sum1 = sum1 + v1[j];       }       for (j = k; j < n; j++) sum = sum + v1[j];       cout << sum + sum1 << endl;     }     return 0;   }   