func_code_string: #include <bits/stdc++.h>   using namespace std;   char s[100005];   int main() {     int n;     cin >> n;     int k = min(n, 4);     for (int i = 0; i < k; i++)       for (int j = i; j < n; j += 4) s[j] = i +  a ;     s[n] =   0 ;     cout << s << endl;     return 0;   }   