Compilare: main.cpp:7:34: warning: built-in function 'log2' declared as non-function [-Wbuiltin-declaration-mismatch] 7 | int n, m, dp[Nmax][20], v[Nmax], log2[Nmax]; | ^~~~ main.cpp: In function 'void preCalc()': main.cpp:28:17: warning: iteration 100003 invokes undefined behavior [-Waggressive-loop-optimizations] 28 | log2[i] = log2[i/2] + 1; | ~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:27:22: note: within this loop 27 | for(int i = 2; i <= Nmax; i++){ | ~~^~~~~~~