func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 66;   long long n, k, a[maxn], d[maxn][maxn];   int main(void) {     cin >> n >> k;     for (int i = 1; i <= n; ++i) {       cin >> a[i];       a[i] += a[i - 1];     }     long long rt = 0;     for (int i = 55; i >= 0; --i) {       rt += ((1LL * 1) << i);       memset(d, 0, sizeof(d));       d[0][0] = 1;       for (int j = 1; j <= n; ++j) {         for (int q = 1; q <= j; ++q) {           for (int w = j - 1; w >= q - 1; --w) {             if (((a[j] - a[w]) & rt) < rt) continue;             if (d[w][q - 1] == 1) d[j][q] = 1;           }         }       }       if (d[n][k] == 0) rt -= ((1LL * 1) << i);     }     cout << rt << endl;   }   