Compilare: main.cpp: In function 'void divide(int, int, int, int, std::vector<int>&, std::vector<std::vector<long long int> >&, int)': main.cpp:29:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] ll cur = dp[1 - t & 1][i] + get(arr[mid] - arr[i]); ~~^~~ main.cpp:37:50: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized] divide(l, mid - 1, posl, pos, arr, dp, t); ^