func_code_string: #include <bits/stdc++.h>   const long long max9 = 10 + 1e9, max6 = 10 + 1e6, max12 = 10 + 1e12,                   max15 = 10 + 1e15;   const long long min6 = -1 * max6, min9 = -1 * max9, min12 = -1 * max12,                   min15 = -1 * max15;   const long long R = 7 + 1e9, NN = 10 + 1e5;   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int n, k;     cin >> n >> k;     bool a[n * k + 1];     memset(a, false, sizeof(a));     int t[k];     for (int i = (0); i < (k); ++i) cin >> t[i];     for (int i = (0); i < (k); ++i) {       a[t[i] - 1] = true;     }     for (int i = (0); i < (k); ++i) {       cout << t[i] <<    ;       int o = 1;       for (int j = (0); j < (n * k + 1); ++j) {         if (!a[j]) {           cout << j + 1 <<    ;           o++;           a[j] = true;         }         if (o == n) {           cout << endl;           break;         }       }     }     return 0;   }   