func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[10000] = {0}, b[10000] = {0}, n, k, dem = 0;   int main() {     cin >> n >> k;     for (int i = (1), _b = (k); i <= _b; i++) {       cin >> a[i];       b[a[i]] = i;     }     for (int i = (1), _b = (k); i <= _b; i++) {       dem = 1;       cout << a[i];       for (int j = (1), _b = (n * k); j <= _b; j++)         if (b[j] == 0) {           dem++;           cout <<     << j;           b[j] = i;           if (dem == n) break;         }       cout << endl;     }     return 0;   }   