func_code_string: #include <bits/stdc++.h>   using namespace std;   int nxt() {     int res;     scanf( %d , &res);     return res;   }   inline void solve() {     int n = nxt();     int k = nxt();     int d = nxt();     vector<vector<int> > ans;     ans.push_back(vector<int>(d, 0));     while (int(ans.size()) < n) {       vector<int> q = ans.back();       int add = 1;       for (int i = 0; i < d && add; ++i) {         q[i] += add;         add = 0;         if (q[i] >= k) {           q[i] -= k;           add = 1;         }       }       if (add) {         break;       }       ans.push_back(q);     }     if (int(ans.size()) != n) {       cout <<  -1 n ;       return;     }     for (int i = 0; i < d; ++i) {       for (int j = 0; j < n; ++j) {         cout << ans[j][i] + 1 <<    ;       }       cout <<   n ;     }   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     solve();     return 0;   }   