func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int a[1000005];   int main() {     long long int i, j, k, l, n, m;     cin >> n >> m;     if (n / m < 3) {       cout << -1;       return 0;     }     j = 1;     long long int f = 0;     long long int x, y;     x = 1, y = n - 1;     while (y - x >= 4 && j < m) {       a[x] = a[x + 1] = a[y] = j;       j++;       x += 2;       y--;     }     while (x <= y) {       a[x] = j;       x++;     }     a[n] = j;     for (i = 1; i <= n; i++) cout << a[i] <<    ;   }   