Compilare: main.cpp: In function 'int main()': main.cpp:47:19: warning: iteration 8199 invokes undefined behavior [-Waggressive-loop-optimizations] 47 | prelog[i] = log2(i); | ~~~~~~~~~~^~~~~~~~~ main.cpp:45:21: note: within this loop 45 | for(int i = 1; i<=8200; i++) | ~^~~~~~ main.cpp:53:19: warning: iteration 19 invokes undefined behavior [-Waggressive-loop-optimizations] 53 | preput[i] = preput[i - 1] * 2; | ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:51:21: note: within this loop 51 | for(int i = 1; i<=20; i++) | ~^~~~