func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long n, k, bottom, top;     cin >> n >> k;     bottom = 1;     top = n;     for (long i = 0; i < k - 1; i++) {       if (i % 2 == 0) {         cout << bottom <<    ;         bottom++;       } else {         cout << top <<    ;         top--;       }     }     long sum, val;     if ((k - 1) % 2 == 0) {       val = bottom;       sum = 1;     } else {       val = top;       sum = -1;     }     for (long i = 0; i <= n - k; i++) {       cout << val <<    ;       val += sum;     }     return 0;   }   