func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int n, k, countt = 0, counts = 0, maxi = 0;     cin >> n >> k;     long long int a[n];     for (long long int i = 1; i <= n; i++) {       cin >> a[i];       if (a[i] == -1)         counts++;       else         countt++;     }     for (long long int b = 0; b < k; b++) {       long long int ts = counts, tt = countt;       for (long long int j = 0; b + (j * k) + 1 <= n; j++) {         if (a[b + (j * k) + 1] == -1)           ts--;         else           tt--;       }       maxi = max(maxi, abs(ts - tt));     }     cout << maxi << endl;     return 0;   }   