Compilare: main.cpp: In function 'int main()': main.cpp:25:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = max((long long)A.size() - c, 0LL); i < A.size(); i++) ~~^~~~~~~~~~ main.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < B.size(); i++) ~~^~~~~~~~~~ main.cpp:39:31: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] bits[++ct] = ((val>>j) & 1); ~~~~^~~~