func_code_string: #include <bits/stdc++.h>   using namespace std;   int modul(int a, int b) {     if (a - b < 0) return b - a;     return a - b;   }   int main() {     int n, k, st, et, s, e, d, v[103], j, m, stm, etm;     cin >> n >> k;     st = et = 0;     d = 0;     for (int i = 1; i <= n; i++) {       cin >> v[i];       if (v[i] == 1)         et++;       else         st++;     }     stm = etm = 0;     for (int i = 1; i <= k; i++) {       s = st;       e = et;       j = i;       while (j <= n) {         if (v[j] == 1)           e--;         else           s--;         j += k;       }       m = modul(s, e);       if (m > d) {         stm = s;         etm = e;         d = m;       }     }     cout << d;     return 0;   }   